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Old 11-07-2006, 08:28 PM
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Biathlon Basic 7-2KO (BI-7-2KO)



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BIATHLON MODEL 7-2KO version 02 Basic (BI-7-2KO Basic) - (Биатлон-7-2-КО исп. 02 Basic)







BIATHLON MODEL 7-2KO Hunting Rifle (BI-7-2KO) - (Биатлон-7-2-КО)




Biathlon 7-2 KO Version 05 - (Биатлон-7-2-КО исп. 05)






Quote:
BI-7-2KO hunting rifle
The "BI-7-2KO" hunting rifle is intended for hunting feather and small game. The rifle is built on the basis of the "Bl-7-2" sporting rifle and retains all its positive qualities: accuracy and compactness of fire, convenience in operation.
The receiver, front-sight base and sight bed are made integral with the barrel. The receiver is provided with a rail to mount an optical sight.
The rifle allows to adjust trigger pull, travel and trigger release character by means of the adjusting screws, without stripping the rifle.
The single-column, interchangeable, five-round magazines are held in a magazine chamber.
The stock features a pistol grip.
The iron sights allow to deliver aimed fire at two ranges: 25 m and 75 m.
Used for firing are the 5.6 mm (.22 LR) rim-fire Russian made and international cartridges.

SPECIFICATIONS
Caliber: 5.6mm (.22LR)
Accuracy: 3 groups of 5 shots at 50-metes, mean spread not exceed 25mm
Magazine capacity, rounds 5
Weight of rifle (without optical sight and accessories) 3.5 kg
Trigger pull, adjustable, within 4.9 to 9.8 N (0.5 to 1.0 kgf)
Overall dimensions: Length 1000mm, Width 85mm, Height (w/optical sight) 260mm


On Customer's order the rifle may come complete with an optical sight and mounts to accommodate it.
Factory Information: http://www.izhmash.ru/eng/product/bi7-2.shtml
Factory Manual: http://gunshowonthenet.com/Gun_Manua...A_Biathlon.pdf
Accuracy Claim: http://www.armrus.com/info/e_armDetail.php?mod_ID=1
Quote:
The impact group at 50 meters do not exceed 1 inch.
Review: http://www.decadefirearms.com/pdf/TS0405.pdf
http://www.gunweek.com/2004/feature0801.html

Last edited by aom22; 10-20-2007 at 01:10 PM. Reason: Modify Text, Restore Title
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Old 11-13-2006, 03:36 PM
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Izhmash Biathlon Basic - Review





http://www.gunweek.com/2004/feature0801.html
Quote:

http://www.gunweek.com
EAA’s Biathlon Basic .22 Accurate Out-of-the-Box

Photos & Story
by Scott Smith
Contributing Editor

When it comes to firearms, those in the caliber of .22 long rifle (LR) are by far the most popular on the market. Every rifle manufacturer seems to offer and inventory at least one model chambered for the ubiquitous .22 LR. For some companies, rifles in this diminutive caliber are the firms' life blood. The funny thing about rifles in the .22 LR family is that their retail prices can far surpass those of center fire rifles from the same manufacturer.

What makes the venerable .22 so popular? This is not an easy question to answer, since the reasons for having at least one .22 LR in the gun vault vary from owner to owner. A true .22 aficionado will have several and be able to tell you the differences in each and every one, even if there are several of the same model.

One thing that I have found is that dedicated .22 owners are like owners of 1911s: they can always make their .22s better. This seems to be something that shooters just have to do. Occasionally, however, you run across a firearm that falls into the category of nearly perfect out-of-the-box, that "requires" little if any "work."

One example of a rifle in this category is the EAA Biathlon Basic. One of the first questions that often comes up concerning EAA firearms is who makes it? The Biathlon Basic is made by one of the world's oldest arsenals, Izhmash.

Made to Last
Like many Russian-made firearms, this one does not come with any high gloss finish, embossing or engraving, but it will shoot and do it under the worst conditions. After all, firearms in Russia have to endure some of the worst climatic conditions in the world.

Ah, but I have digressed; back to the Biathlon Basic. As the name implies, it is an entry level biathlon-style rifle. It has a short stroke straight-pull bolt, recessed target crowned barrel, and what I considered a nice trigger pull. Hey, I am not a .22 Match Rifle shooter, what do I know? Unlike a true biathlon rifle which generally uses a variety of peep and post sights, the Biathlon Basic comes with a Picatinny rail to install your choice of optics.

Overall the EAA Biathlon Basic is a well-made rifle. The fit and finish of the rifle is good, trigger pull is about two to three pounds-crisp, and no creep. This is a solid, well-built rifle-no frills, no bells or whistles; just a good rifle.

To me this was just another rimfire rifle. Meaning that it was fun to shoot, it was fairly accurate, and ammunition was inexpensive to downright cheap. Since I wanted to get an opinion of a rimfire aficionado, I enlisted my bud, Bill Worthington to help with my test.

Old Hand at .22s
Worthington is, to say the least, a devotee of the .22 LR. He has an extensive collection of rifles chambered in this diminutive caliber. No, this is not a set in the vault or in a glass case to be admired collection, but his rifles are used regularly. I figured he would be a good candidate to give a true, unbiased opinion of the EAA Biathlon Basic.

Knowing that it is hard to get Worthington to venture to the range, I called him and mentioned that I was off to shoot and could he be ready in a half hour or so. Upon learning of the new .22, it was a done deal; he'd be ready.

One of the big reasons to get Worthington to shoot with me, is his working knowledge of rimfire rifles, plus he has a wide variety of ammunition that we could shoot through the Biathlon Basic. My inventory of .22 ammo was limited to some Federal and Winchester bulk packs as well as some GI training ammunition. Worthington did not let me down, and when we got to the range he unpacked several offerings from CCI, Eley, Laupa, as well as a number of hunting/target loads from Winchester, Federal and PMC.

This should be enough ammo to give the EAA a thorough test drive.

After Worthington got over laughing at my choice of scopes, my nearly ancient Redfield Widefield, he gave the Biathlon Basic the once over. Nice recessed target crown, good trigger, the classic M1/M14 push-pull safety, attached Picatinny/Weaver rail to mount optics, detachable 10-round magazine and a nicely finished stock were all noteworthy to him. Being the skeptic, his comments were something to the effect "it looks good, has a few nice features, but does it shoot?"

Range Test
Sounds like a fair question. Since I had already shot it and my answers would not suffice, I told him to shoot it. Granted the scope was not set-up for Worthington, but being the trooper he is, he drove on and shot the EAA. He ran several magazines through the little rifle to get a feel for it before getting serious about seeing how well it could really shoot. His test groups at 50 yards all hovered under an inch, not bad for a "plinker."

After a test drive of the Biathlon Basic, Worthington got down to shooting the rifle. He was amazed that this off-the-shelf rifle was easily capable of °-inch groups and this with an old scope that wasn't adjusted for him. His comment to punctuate the rifle's capability was simple: when can I buy it, and how much, so I have the cash. From a guy that breathes the lineage of the .22 LR, these are high words of praise.

Between Worthington and I, several hundred rounds of .22 LR were sent down range through the EAA Biathlon Basic. This rifle simply shot and shot, even the least expensive bulk .22 ammo shot well out of this rifle. Granted with match grade cartridges it shot extremely well, but at $12-15 a box of 50 it should.

The EAA Biathlon Basic would be ideal for use on the local varmint population, chasing empty beer cans down the range, or getting serious about shooting aspirin-sized groups. This is a fine shooting rifle and would be a good addition to any firearms collection, or as a starter for a new shooter in the family. For more information on this and other EAA firearms, contact: European American Armory (EAA), PO Box 1299, Dept. GWK, Sharpes, FL 32959; phone: 321-639-4842; on-line: www.eaacorp.com.

European American Armory nolonger stocks the rifle, only parts

Rifle Specs

OAL: 39 inches
Barrel Length: 19.5 inches
Weight : 6.1 pounds
1/8 twist
MSRP With rails as tested $369
MSRP With adjust. sights $419






By TEXASPROUD
AirgunBBS.com > General > Firearms reviews > Izhmash Biathlon Basic
Quote:
After being on this website for some time I thought I would make an attempt at reviewing a rimfire rifle that I acquired some time back. Bear with me on this, I will try to keep my Texas colloquiallisms to a minimum, so, Lord willin, an the creek don't rise, I just might pass something on to y'all.

A quote often attributed to Col. Townsend Whelen, an early 20th Century American marksman, is, "Only accurate rifles are interesting." I believe the good Col. would have been interested in the Biathlon Basic, a Russian import from the Izhmash factory and the good people at European American Armory.

Weighing in at 6.1 lbs, with an overal length of 39 inches, the Basic has an unassuming appearance, yet there is something about it that tells you this might be more than just a .22 plinker. The wood is very plain, but there are no obvious machine or tooling marks on the receiver, and the 0.750" untapered 19.5 inch barrel forewarns you that there may be more to this rifle than meets the eye.

As you rotate the rifle in your hands and look at the underside you notice the triggerguard and magazine port appear to be made of a polymer. The safety is built into the triggerguard and is engaged by pushing on the safety from the outside surface of the trigger guard. Once engaged, neither the trigger nor the bolt may be activated. To deactivate the safety, simply push on the safety from inside the trigger guard.

The rifle comes from the factory without any sights, but does have a Weaver type rail attached to the receiver. This may be a proprietary type mount as the Burris Signature Zee Rings I tried to install refused to tighten enough on the rails. I ended up using a set of Weaver mounts and a BSA 6-24x40 that wasn't attached to anything.

The crown of the the barrel has the deepest recess I've ever seen, it reminds you of the flash suppressor on a jungle carbine. It should provide additional protection if you decide you want to use it for hunting small game or vermin control.

What draws your attention to this rifle is the bolt handle on the right side. As you pull back on the bolt, you immediately engage the articulated toggle style action that is unique to Biathlon rifles. It is faster than a standard bolt action, but not as fast as a semiautomatic. I also feel that it is easier to stay on track with your targets using this style of action vs a standard bolt action, at least, that's my story and I'm sticking to it.

As with all new rifles, it is a good idea to pull the bolt and clean the barrel of the preservatives that protect it from the time it leaves the factory till the time it gets to you. If you are a fanatic about accuracy, or even if you're not, it is best to clean the barrel from the breach if possible.

This is one of the only negatives I have about the rifle. The E.A.A. manual does not tell you how to remove the bolt. A call to E.A.A. did not help, as they told me, "We don't encourage you to remove the bolt." A quick trip www.rimfirecentral.com and their forum on "Romanian trainers and others" gave the information needed to properly field strip and clean the Biathlon Basic.

Field disassembly involves removal of the scope, also remove the magazine, pull back on the bolt and insure there is no round in the chamber. With the toggle action half-way open, push on the spring loaded detent at the back of the bolt assembly and pull the pin straight out from the top of the receiver. With the pin removed, you may now pull the bolt assmbly out for cleaning from the breach end of the barrel.

Reassembly was just as simple, and once reassembled it was time to test it out for accuracy. Due to time constraints I grabbed a brick of Aquila 38 gr subsonic .22 long rifle and went to the range. I didn't bother with sorting by weighing rounds or measuring rim thickness, I just loaded, sighted, and shot over sandbags and this was the result.

The best 5 shot group measured .401" at 50 yds, and that's nothing to sneeze at. The question I now have is, "What will it do with Eley, Lapau, and some of the other high quality ammo." Don't get me wrong, Aquila has proven to be an outstanding load in certain rimfire rifles I have and has beat out the big honcho brands. Like any other .22 rimfire, you need to try a variety of loads to find out what shoots best. In this case I am using Mexican ammo that I can buy at $15.95/brick of 500. (Do I hear a groan?)

I did not have a trigger gauge, but the trigger felt light with a certain amount of takeup. The release was crisp and accuracy as I stated was good. This has my curiosity aroused so much I can't help but wonder, "How well does the full blown Olympic Biathlon shoot?"

For those of you that keep up with military rifles, the SV-99 sniper rifle uses this same type action with adjustable trigger, enhanced adjustable stock, bipod, and a slightly shorter threaded barrel with silencer that , overall, measures right at 1 meter in length. The rear stock can be removed and replaced with a pistol grip for shooting from cramped quarters. After shooting the Biathlon Basic, I can see why they adopted it for use in Chechnya.

The Biathlon Basic was acquired for less than $300 at one of the local Dallas Gun Shops, well below the MSRP. It may not be the prettiest rifle out there, but for better than average accuracy, medium weight, and a rifle good for hunting, vermin control, and maybe even CMP sporting rifle, this rifle has a lot to offer.

Last edited by aom22; 10-20-2007 at 01:07 PM. Reason: Update Weblinks/Edit Text
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Old 11-13-2006, 04:07 PM
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Izhmash Biathlon Basic Modifications

Fuzzy's Projects . . . !
Bryan "Mick" Knight and others

Izhmash Biathlon Basic Rifle Modifications

Quote:
This rifle . . . a relative newcomer to the American shooter, and intended as one of several "sporterised" versions of the original Russian Baikal/Izhmash Biathlon match rifles . . . is proving to be one of the best acquisitions on the market for the smallbore rimfire shooter desiring good accuracy and reliability at a relatively low cost. Other variants of the BB, as it's becoming known to the American shooter, are equipped with barrel-mounted open sights, or storage for extra magazines in the butt. Like much of the inexpensive Russian equipment it will not win any prizes for superb aesthetic finish, but the actual important parts - the receiver, trigger mechanism and barrel - are well made and appear to offer the reliability of the proverbial brick outhouse ! The stock, is of some unknown hardwood, and might even have been whittled out of a convenient 2x4, but overall this rifle will outperform the vast majority of the current American crop of smallbore rifles right out of the box !

The action - a toggle bolt type - will be somewhat strange to the average American shooter. Borrowed from its' Biathlon parent, ( I suspect that the actions actually used are those from the high-end Biathlon Rifle production line that didn't "quite make the cut" in quality control ), and designed primarily for speed, and ease of usage when wearing gloves, it offers re-loading times much faster than the typical bolt action, and approaching those of a semi-automatic. It offers an alternative approach to that used in the more sophisticated Forstner action of the very expensive Anschutz biathlon rifles. Here are full views of the stock BB from both sides:



Quote:
Overall the lines of the rifle are pleasing . . . it offers good balance in the hands .... points naturally . . . and has a heavy enough barrel to offer considerable stability in the hold. The trigger, as delivered does exhibit some creep and over-travel, but typically has a pull-off weight of approximately 2#. The trigger mechanism offers some facility for adjustment to suit personal needs . . . some rifles, apparently randomly, are even fitted with a fully adjustable mechanism similar to that on its' big brother, the more expensive, Izhmash Biathlon used in formal competition.

If you are considering using one of these BB's for current CMP Rimfire Sporter competition in the 'Scope-Sighted "T" Class, as many of us are, it will almost certainly have to undergo some minor modifications. When fitted with anything other than the simplest fixed-magnification scope, the overall weight will probably exceed the CMP 7.5# maximum limit . . . so some "dieting" is required ! Secondly, with that 2# trigger pull, a little exploration of the trigger mechanism will be needed to bring it up to the CMP 3# minimum. Finally, and again probably due to the "quality control considerations" noted above, you may have to do a little adjusting/polishing of action components.

Stage 1 - 'Scope Installation and Preliminary Weighing

So . . . . let's get started ! Assuming that you've decided on a suitable set of Weaver-style rings and a 'scope, install them and check the correctness of 'scope location, fore and aft, for correct eye relief in all three shooting positions - (Prone, Sitting/Kneeling and Offhand). & Now weigh the rifle, using an "accurate scale". I have found the Rappala digital fish scale sold in the Sporting Goods department at Walmart to be accurate enough within, say, +/- 0.1# for the purpose. (Ref: Topic #11 on the Projects Index page).

If you meet weight limits - Fine ! If not, then consider your options . . . switch to a lighter scope/rings combination and try again . . . or start whittling on the stock ! Some ideas for "stock whittling" are shown in Project #9, including my own "Tatiana", the slinky city lady in 'basic black' that we created from the original peasant gal BB. For reference I found that it was possible to remove almost 0.5# of weight from the original stock in that transformation process. Always keep in mind that the rifle "MUST FIT YOU" if you want to shoot your best !

Stage 2 - Checking the Action for Smoothness

Before starting on any modifications or general tuning, first find out what the rifle can do . . . how smooth is the original OOB action !

Referring back to the "possible quality considerations" how smoothly does each round feed from the magazine to the chamber, when actuating the toggle bolt, as compared to the smoothness when actuating the bolt without any rounds in the magazine ? From first-hand examination and trial of several examples of the BB action, it has been observed that there can be a distinct "end-of-travel" hang-up in the feeding operation. If this is observed, take a closer look at the way the incoming round is gripped by the face of the advancing bolt, particularly with regard to it "sliding freely" into the bolt face pocket, and under the claws of the two extractors. If the extractor claws exhibit insufficient clearance from the bolt pocket face, then the round does not fully enter the pocket and tends to hit the chamber entrance at too steep an angle. There is a tendency for the extractor claws to show a little skewness in their pockets, and to have rather sharp, burry edges.

To remedy this problem start by removing the bolt . . . Depress the pawl at the rear and after lifting out the rear toggle pin, slide the complete bolt block and toggle linkage out to the rear of the receiver. Now take a round of ammo, and test insert it into the bolt face pocket by lightly sliding it upwards as if it were being fed from the magazine. In all probability it will only go about 1/2 to 2/3 of the way in before becoming "tight". The remedy is to examine the extractor claws for skewness and/or burrs . . . if found a LIGHT filing or stoning is recommended . . . keep those under-surfaces of the claws basically parallel to the bolt face, with just a slight relief on the lower leading edges. Remove just enough material to remedy the problem . . . NO MORE ! . . . and keep testing with the re-assembled rifle/bolt and a round of ammo as you go. I'd suggest using an old style ignition point file, or better yet, one of the "el cheapo" diamond-coated Chinese ones now available, for the operation, which can then be done without removing the extractors from the bolt.

Clean the bolt and toggles thoroughly after this adjustment and re-lube the complete assembly with a suitable product . . . I have used either Shooters Choice High-Tech grease, or Primis Lube Gel with good results.

Stage 3 - Trigger Mechanism Adjustments and Modifications

For the purposes of this article I'll assume that we're going to "heavy up" the trigger for CMP competition . . . if you want a lighter match or bench-rest pull-off, then some operations will need to be "reversed".

Let's start by removing the barreled action from the stock . . . first a single screw at the rear of the trigger guard must be removed and the moulded plastic guard lifted out . . . it has a lip at the front that engages in a recess in the stock. Then undo the the two captive screws holding the barreled action to the stock, and separate the two pieces. Lay the stock to one side and let's take a look at the barreled action, and particularly the trigger mechanism

Fig A - Left-Hand View


Fig B - Right-Hand View


Fig C - Bottom View


Fig D - Trigger Mechanism Bits

Last edited by aom22; 12-22-2007 at 04:38 PM. Reason: Update Links
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  #4  
Old 11-17-2006, 07:56 PM
pitviper51

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this information couldnt come at a better time i found one of these at the shop today, and it had my intrest once i picked it up, felt very light and the action was fast, i might just have to dig out for this one,, any clue as what a good price is for m=one, the one i found was just over 300. thanks
mike
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Old 11-17-2006, 09:07 PM
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got mine for $240 used. could get another for $275 with a cheap 3-9 scope on it.
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Old 11-17-2006, 09:09 PM
pitviper51

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cool, this one is new so hight priced is explained, im just curious what the biggest scope i get get for it and still be able to hold it good, that rear only mount is my dilema,,, i want a 6-19x44 scope but it might be to long,, still gotta find out if i can get it rifle tho, hope to lots of good reviews so far
mike
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