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  #1  
Old 02-03-2020, 04:59 PM
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40XR Range Report



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This 40XR rifle is a work in progress. With the original position stock, SK rifle match and a plate, a typical 100 yd group would have four nice shots and one flyer. The stock design and mid weight barrel makes for a dandy offhand rifle. I prefer the hand grip area and the resultant trigger finger position over the 1411.

Original stock.
2FE2C265-D1C4-45BD-A8A9-CA717A5543CE_1580768151459.jpg

Swapped in a more friendly BR stock and a Jewel. Yet to change the scope so it still wears a 8X32X50 variable. Works fine for offhand but not so good for 100 yd BR.
A1A5CA55-8A6F-4100-B11F-ACBD99EA5CF0_1580768364237.jpg

Here’s a shot of the range. It’s somewhat shielded from the wind with the majority coming from 6 O’clock.
D1241C7C-0CD5-4DC6-9C14-6024E327EB74_1580768823222.jpg

The target was nothing to write home about. Accu Weather had the winds at 10mph but it felt less. Tried to wait for lulls but there weren’t any. Getting frustrated separating wind induced noise from other variables.

Used SK pistol match for seasoning (center bull) before moving to Center X.
ADF5CE1E-9B4B-4381-9DA3-CBA7556E5DD7_1580770227987.jpg

Mediocre results at best. I’m starting to re-think this whole 100 yd testing stuff. Think I can build a new berm and shift things around to get 50yds and reduce some of the wind effects.
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  #2  
Old 02-03-2020, 06:00 PM
M52E1
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The biggest part of the game is to control or eliminate variables along with setting realistic expectations:

Variables to review / control

- Is the new stock bedded for the barreled action? If so is accraglass, bisonite or marinetek or a similar product? Did bedding job include pillars?
- Action Torque - Do you torque the action into the stock or is it finger tight?
- Trigger - I know that many believe light triggers are best, however sometimes adding a little more weight will improve the shot execution process
- Bolt - Is the firing pin spring original or was it replaced? Was the bolt cleaned?
- Barrel - Did you try cleaning the barrel with IOSSO or JB Bore paste to eliminate any carbon or leading that may be present?

Accuracy expectations - Contrary to many of so called 1/2" 100 yard groups that are famously reported on this site, realistically the best one can expect from .22 match ammunition is .75" groups at 100 yards (10 shots). I would set a realistic expectation and then stick with a known brand of ammunition that is capable of shooting .75" - 1.00" groups at 100 yards like Center-X. You could send the barreled action to Lapua for testing, or purchase 100 rounds from five different lots of Center-X for testing on your range. Having tested twice at Lapua and more than five times with Eley I can attest that finding a lot of ammunition that will shoot is not as easy as some might imagine. The first time I tested with Lapua it required about four hours to test ten lots of Midas + and ten lots of Center-X. Out of the 20 lots one of each brand worked well in my rifle and that is what I purchased. You may get lucky on the first try, however chances are it will take time and effort.

Bill
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Old 02-03-2020, 06:28 PM
Greg Palman
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I would suggest

You season a barrel after cleaning with the same ammo you plan to shoot your target with. Differing bullet lubs may conflict with one another and affect your record group. Also get some wind flags and practice with them learning what they are telling you about velocity and vector.

Last edited by Greg Palman; 02-04-2020 at 07:46 AM.
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  #4  
Old 02-04-2020, 10:36 AM
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Bill & Greg. Thanks. Been around long enough to recognize good thoughts and sources.

As Bill posed questions, thought it good form to respond.

(Is the new stock bedded for the barreled action? If so is accraglass, bisonite or marinetek or a similar product? Did bedding job include pillars?)

Unbedded. Definitely an opportunity.
30 inlbs on front and rear screws. The middle screw secures just the trigger guard.

(Trigger - I know that many believe light triggers are best, however sometimes adding a little more weight will improve the shot execution process)

Seeing better results the closer I get to free recoil so I’m liking the light triggers.

(Bolt - Is the firing pin spring original or was it replaced? Was the bolt cleaned?)

Have not disassembled the bolt. Need tools. Original spring. Another opportunity.

Barrel - Did you try cleaning the barrel with IOSSO or JB Bore paste to eliminate any carbon or leading that may be present?

Have not used paste. Employing chamber brushes and good cleaning practices. Seeing clean patches and no chambering issues. Bore scope would be good. Wish they made one for a IPhone.

Good thoughts on lot testing in a tunnel. At this moment in time, I’m not that level of a shooter but darn good suggestion.

I was thinking the same as Greg. It’s time for wind flags. I’m slowly adding gear and learning, which mostly involves finding things not to do.

Here’s an example of what happens when the intrepid shooter adjusts the geometry of his two piece rest and shoots no sighters.

1st two shots went high, then settled down.
E00F9D89-5AA4-4BB4-8A99-B39BEB5941A4_1580833584533.jpeg
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  #5  
Old 02-04-2020, 02:13 PM
Greg Palman
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And

don't underestimate the need to try other top line RF ammo...like Eley and RWS. Rifles can do some strange things when you don't feed them the gruel they prefer.
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  #6  
Old 02-04-2020, 04:06 PM
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Tried a different rifle today. This is a new to me 40X. You guys will know what it is despite the black stock. Todays goal was to get a 100 yd zero and check for any mounting flaws with the optics.
B945F6CF-B2A9-4A24-A131-BA3219946195_1580852872692.jpg

It zeroed fine. Had a concern that scope travel may be limited. That was unfounded, lots of travel.
3236F92C-98DA-4E84-BF50-01F3A84B7DBD_1580852971469.jpg

This KS rifle has a full length stainless plate underneath. It’s real slippery. Doesn’t bind. Seems happy, if that makes any sense.
2F617A90-5930-4E40-96CA-F696B53F26F0_1580853149350.jpg

Used my cheapest ammo (SK pistol match) to zero when the wind actually stopped! Holy smokes. Went back to pick up better ammo and had enough time to fire a quick 5 shot group of Center X before it started to rain.

Only one data point but much better then the other rifle.
8F6211A1-503A-4E07-B67B-59CA7038F841_1580853244178.jpg

Obviously a lot more testing is needed but I’m leaning towards returning the 40XR back to factory configuration and spending more time with this setup.

Greg. I hear yah with different brands. Eley black box is on the list. I’m starting to get a better feel for how good ammo preforms. Night and day but darn it’s expensive. Life is short though. 😀

Last edited by Cattleman30; 02-04-2020 at 04:54 PM. Reason: Lost the title?
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  #7  
Old 02-05-2020, 05:14 AM
Greg Palman
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A

Frozen Leupold in bob Brackney rings. I have two of them wonderful setup. Yes lots of adjustment range. Nice rifle. Your comment about much better than the other rifle may only mean the other rifle does not particularly like Center X.

Last edited by Greg Palman; 02-05-2020 at 08:15 AM.
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  #8  
Old 02-05-2020, 05:28 AM
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My 40XR loves CenterX
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  #9  
Old 02-05-2020, 05:50 PM
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Remember that "better" ammunition does not always equate with price when it comes to the higher grades of match ammunition. Over the years I have tested and purchased some phenomenal lots of Eley Match and was rewarded with some outstanding scores. While it takes time and money testing is the way to go if you are seeking the highest degree of accuracy from your rifle.

I still recommend using IOSSO or JB Bore paste to clean your barrels as they really eliminate the carbon and lead (if present). I like to use them to clean my match barrels after about 2K rounds of use (I clean after each use as well - I use a bronze brush as barrels are meant to be used and replaced)

Bill
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Old 02-09-2020, 10:37 PM
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That's a beautiful rifle,
A couple of suggestions.
Build a good steel and concrete bench.
Get a good set of flags from someone like one of these.http://benchrest.com/html/wind_flags.shtml
Get a level to put on your scope to minimize rifle cant.
Just to see try a box or two of Tenex or Eley Match.
I wish I had your stock, mines an old McMillian.

Last edited by kevinbear; 02-09-2020 at 10:39 PM.
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  #11  
Old 02-15-2020, 04:50 PM
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Shot the 40XR today, this time with the original trigger and stock. Pretty sure the 40XR BR will make a better BR rifle so this one is back to factory configuration.
E3880C67-4C44-4F12-BAF0-40A788FA3B38_1581802853500.jpg

The position stock, which works so well for offhand has a lot of shortcomings when compared to the previous BR stock.
0791D6C9-89F8-46FF-B5DC-C4678B23B40C_1581803402554.jpg

Dispite the fore end plate, the rest / stock / overall geometry was not happy. Too many times where the rifle didn’t cleanly return to battery (same POA). Very much unlike the previous BR stock.
98DD0645-4DC7-4B8F-8341-5F65B4BD8256_1581803926260.jpg

Here’s the 100 yd target with Center X after warming up with Pistol Match. The 1st bull may be what Greg was telling me in post 3. “Season after switching ammo” or something else. Was hoping that staying in the Lapua / SK family of lube, I could get away with no seasoning.
07BDF486-B629-4365-B05A-0BE3C7391971_1581804469996.jpg

Was thinking, where is this darn vertical stringing coming from? Changing targets, adjusted the rest two feet to the left with no sighters before shooting bull 1. Probably bad form. Definitely need more practice.

Anyway, good to get out after all the rain.

Last edited by Cattleman30; 02-15-2020 at 06:10 PM. Reason: Define return to battery issue
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  #12  
Old 02-16-2020, 06:19 AM
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this is a little off-topic but i'm always interested in discussions around ammo and cleaning. In re to ammo, I will typically take a variation of perhaps up to 8 or more 52s and 37s with me to shoot. Its impossible to really find/keep track of preferred ammo without carrying around a spreadsheet. I've found eley blackbox to be a happy medium across everything so that's what I shoot. I shoot only 100 yards (actually more like 120 because of the configuration of my land where my range is) and only apertures so that last minute of accuracy is probably lost on me anyway. In re to cleaning, i'm not sure I have enough science there and am probably not doing it optimally. I'd love to know if some folks have a "standard" round count or its just done via group spredding. As a side note, and it may just be me, but----it seems that the 37's take more rounds after cleaning, than the 52s do, to come back in. I've tried to note that and it seems to be my consistent observation.
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  #13  
Old 02-16-2020, 08:01 AM
Greg Palman
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Cattleman

regarding you comment about your rifle not returning to the same POA, two piece rests are required in most benchrest classes precisely to avoid return to battery support like a single piece rest offers or like a railgun does. The return to POA with a two piece setup is close but don't be disappointed if it doesn't exactly return to your first POA. Good luck.
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  #14  
Old 02-16-2020, 11:13 AM
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Quote:
Originally Posted by Greg Palman View Post
The return to POA with a two piece setup is close but don't be disappointed if it doesn't exactly return to your first POA. Good luck.
Greg. Thanks for your insight. Every tidbit helps.
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  #15  
Old 02-21-2020, 07:56 AM
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40XB Bench Rest Stock

Quote:
Originally Posted by kevinbear View Post
I wish I had your stock, mines an old McMillian.
Kevin. You have a nice rig. The gentleman that made my BR stock has another up for sale. It’s like this one except cut for safety.
C890B2F4-EEA8-468C-8B27-998B40A3BBC9_1582292937766.jpg

Not affiliated with seller. Purpose for posting is to help guys here. Hopefully this is okay.
http://forum.accurateshooter.com/thr...stock.3999648/
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