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Rimfire Technologies 10/22 Quantum Barrel

36K views 264 replies 75 participants last post by  G McBride  
#1 ·
#2 · (Edited)
Cool!

I just completed more testing yesterday by taking a sample out of the inagural batch that went to Shooter's Discount and testing it in order to experience exactly what a new barrel owner will experience.
The very first thing that will be noticed, is that the first shot from a cold barrel, and the first hand loaded shot will land much closer to the next shots on a target. That is one of the benefits of good barrel tensioning of the German made Lothar Walther blanks.
We weighed them at 24 ounces. The actual barrel portion is 16.25", then the threaded adapter and weighted end cap extended the overall length out to about 17.3". Really stinkin' liteweight, but with the weighted nose they balance really well and provide what I call "Pointability", a perfect combination of balance and nose weight for steadiness offhand as well as off of a rested position.
The 416 Stainless shanks are heat treated on the breech end just as the factory barrel is done, and the fit to the receiver is snug as a bug. The laser engraving is also a very nice touch. The extractor groove is done in such a way (specific angle) as to promote a really good grab onto the rim, and the cut itself is right up to the radiused chamber lip. I've used nothing but factory extractors in my testing and had 100% reliable cycling.
The extractor leads into a very nicely installed chamber that is much tighter than a Bentz chamber, a design we've been toying with for several years now. Exceptionally high accuracy but with enhanced reliable cycling of a lot of the less expensive cartridges.
That leads down to one of the tighest 22lr bores found anywhere, with a final twist of 16.4:1. If you take a peek down the bore, you'll see nothing but a perfectly honed and lapped mirror finish underneath of that protective oil film. That meets a chamferred crown before exiting through the compact stainless threaded adapter and out through the stainless end cap.
The aircraft aluminum outer sleeve is a very nice satin velvet black done with a virtually indestructible epoxy powdercoat.
That is kinda the five cent tour.
It certainly isn't the least expensive barrel, but we think it has all of the right qualities that one should expect from an exceptionally high quality offering.
Each barrel is serial numbered, and corresponds to a particular batch run and then Dealer order, and every batch run gets random sampling to ensure performance standards meet expectations.
Here's the Carbine stocked testing rifle used on barrel number 0017 on Monday afternoon:
Image

At this time, SHOOTER"S DISCOUNT is the ONLY place to get one of these barrels. They felt confident that these barrels would be just the ticket and did not hesitate to grab the inagural production run of the new Quantum series rifle barrels.
They should work really well in a suppressed application, with a true match grade chamber that supports subsonic ammo, "Jethro's Bunny Popper" has never been more able.:)
 
#30 ·
The extractor leads into a very nicely installed chamber that is much tighter than a Bentz chamber, a design we've been toying with for several years now. Exceptionally high accuracy but with enhanced reliable cycling of a lot of the less expensive cartridges.
Thank you so much for that excellent report on a great-looking new barrel!!!

Just a question on this. My less-than-professional impression has always been that tighter chambers, while giving greater potential for accuracy, could often lead to LESS reliable feeding and so forth, especially when dealing with lower quality ammo.

Can you describe how it would work with this barrel, that the TIGHTER chamber will actually lead to ENHANCED reliability?
 
#3 ·
Wow, skeeter, the barrel looks fabulous. It's everything I want in a barrel... except the color! Do you plan to do silver or other colors?

I think you may get flack for the price, but it looks like the premium price is WELL warranted by the premium features. I hope that your barrel shoots itself into the premium class with Clark, Lija, VQ, etc.
 
#4 ·
gotta start somewhere



Yes, one of the neatest features to this modular design is that the sleeves can be finished to virtually anything desired or imagineable. We have several different seasons of the high quality life-like Camo being cooked up, colors from powdercoat, duracoat and the high quality automotive finishes as well. So now you have a viable platform to build much more of exactly what you are wanting. There's some examples coming along where the finish on the barrel will match the exotic finish on the stock. Now you can effectively go after an entire theme for the rifle, for instance, I mentioned to Craig that since he has Rebel flags all over his shop, and tattooed on his body, he might consider a Confederate flag theme for the finish of the overall rifle (I sincerley do not intend to offend anyone). Now you have a viable, worthwhile platform with which to invest, knowing that you'll be smartly rewarded when you get it all together and actually go out and shoot the darned thing.:)
It's probably not an item that a lot of newer builders will gravitate towards, but I imagine that the more experienced and capable builders will at some point have to ask themselves what they are missing by NOT employing one of these puppies into their recipe. It's got it all. I know at some point along the way I had to try it for myself just so I would know. I think it's completely worth it, no hype, just results.
I've had a veritable TON of help from some very great people over the course of the last several years, and now it is time to bring it all together and make it all happen.
Don't worry, there's still more to soon go with it.:)
As far as the price goes, If you look at the retail of barrels that carry many fewer advancements and details, this things a real bargain.
A lot of guys that run suppressors really like them because of how the proven, compact threaded adapter aids in opening up the pressure as it leads into the can, unlike a conventional barrel where it remains 22 caliber all of the way in.
"Less disturbance" they say. It is all in the details.:bthumb:
That whole thing was Bob's genius there, pure genius I tell ya, of course he's a suppressor nut wouldn't ya know:rolleyes: .
 
#7 · (Edited)
Premise

Yes Craig, the entire premise is to have your cake and eat it, too.
Gosh, I guess you'd hafta paint the stock to match a barrel that looked like that, otherwise all your buddies would get after you for only going half way.:) Thank goodness for some really exciting, high precision stock options (pun intended) that have come along recently, I was beginning to get all "Blastered out".:) Now you are free to go to the next level. Carry on.............
 
#12 ·
Hm2



HM2 has been a passion of mine since it's intorduction in 2004. There is no system of parts that I am aware of that works better than what I have developed for that cartridge in a 10/22. It's a pretty safe bet that an HM2 offering will emerge.:bthumb:
 
#14 ·
Thanks

Thanks Cleety, I really appreciate the kind words. We have worked exceptionally hard on this project as well as many other supportive projects that will soon become evident. Rather than build something that already exists, we now truly have something that simply did not exist before now, and we are excited about what the future may hold.:)
 
#21 ·
Yup

There will be a Matte black finished shank and cap, as well as a matte silver option also, just been working with different techniques to see which provides the best results. As above, we are working towards having your cake and eating it too.:)
 
#23 · (Edited)
black shanks and ends

The all black barrels are just a few short ticks away from being available, you may want to pre-order as the initial production run is not very large. They also have the new "Ultra-Modern" crown design, but Shooter's Discount will unveil that when it is time.:bthumb:
Pretty cool looking, and stealthy and well worth the extra few weeks wait.
 
#29 · (Edited)
Some suppressor-specific questions:

What is the thought behind the partially-rebated muzzle thread shoulder? It appears that when a suppressor is threaded onto the barrel it's rear face will contact only a small portion of the shoulder concentric to the relief and leave the impression of a gap between the suppressor and the barrel. From my understanding, a wide bearing surface to the shoulder is advantageous. Maybe, I'm just misinterpreting the picture.

Also, what is the thread length?
 
#31 ·
impression



First, allow me to quench any doubts or concerns by stating that this threaded nose piece was originally designed by my very good friend who is incredibly gifted in many ways. He is also one of the Authors of "The encyclopedia of Glock, a complete reference guide". He was the one who originally offered up the solution to utilize His existing design as the needed solution both for barrel tensioning nut and threaded nose. Consequently, this piece has been in use in the field on pistols for more than several years now. Walthers, S&W's, Glocks, yadda, yadda, yadda. I can't even keep up with all of the applications he now covers. So any reservations about it working or not have already been addressed by the many thousands of similar adapters out in the field. Besides, Ted Nugent uses them on His guns, that's good enough for me.:)
The important thing here is that the suppressor is within tolerance when installed so that you do not get a baffle strike, and it is a very valid concern. This HAS been a problem recently for several well known manufacturers. We spent a lot of time getting all of that correct, testing it and verifying function/clearance/fit.
You all need to thank Bob for all of his knowledge and experience
being first offered, then poured into this project. For those aspects, it has been He that ensured that the answer is everything it needs to be, thread length is the ideal .400 so you don't crash the first baffle.:bthumb:
 
#34 ·
soon

Wow Skeeter the barrels look great,

Will these barrels be offered in longer lengths ? Also when will the all silver color(stainless) be offered or will it ?

AARR
Yes, all of the above options are in the works. The next production cycle is going to be matte black shanks and end caps, and a limited supply of silver matte sleeved barrels with either polished shanks and end caps or black shanks and end caps (some of each) is due out shortly.:bthumb: