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Green Mountian Barrel Accuracy

This is a discussion on Green Mountian Barrel Accuracy within the Ruger 10/22 Rimfire forums, part of the Rifle & Shotgun Forum category; I recently bought a "sporter" Green Mountian Barrel for my Ruger 10/22 of which the salesman assurred me that it would shoot 1/2" to 3/4" ...


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Old November 7th, 2011, 04:53 PM   #1
 
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Green Mountian Barrel Accuracy

I recently bought a "sporter" Green Mountian Barrel for my Ruger 10/22 of which the salesman assurred me that it would shoot 1/2" to 3/4" at 100 yds. After break in the barrel never did get below about 2" with the ammo that he recommended. I know that the shooter bears some of the blame but I can shoot under 1" with my .22 Mag Savage bull barrel with accu trigger at the same distance. The Ruger 10/22 has been fitted with a 2.75# trigger kit. I returned the sporter barrel for a bull barrel and at the 100 round break in point I'm experincing about the same results. The question is what can I expect from a Green Mountian bull barrel on a Ruger 10/22 at 100 yds? Should I expect to be under 1" groups? I was using CCI mini mags in both cases and kind of a novice so if y'all can give some insight it would be greatly appreciated. Thanks!




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Old November 7th, 2011, 05:01 PM   #2
 
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Try better ammo. Mini Mags aren't 'target ammo'. l almost always shoot Eley Tenex in my Anschutz when I'm looking for 1 ragged hole at 50yrds.
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Old November 7th, 2011, 05:45 PM   #3
 
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Green Mountian Barrel accuracy

I appreciate the reply but was trying to keep the conversation fixed on the Green Mountian Bull Barrel as used on the Ruger 10/22. I looked up the cost of the ammo which you recommended on the Midway site to be about $20 for a 50 rd. box. Unless there is a mistake that kind of target shooting with a .22 is kinda out of my league. Heck, that's twice the cost of my cheaper .22 Mag rounds. One other thing, I was asking about what to expect from my Ruger 10/22 with a Green Mountian bull barrel at 100 yds. and not at 50 yds. It does real good at 25 yds. and I can do the "ragged" edge thing too. I guess that one of the mysteries is dealing with the transition to subsonic and the funky stuff that may affect the accuracy of the .22 projectile.

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Old November 7th, 2011, 08:09 PM   #4
 
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I own/have owned a couple of GM barrels and they are a great economy barrel and have grouped "around" 2 inches at 100 yards depending on conditions/ammo etc as well...however, I have never shot 1/2 inch -3/4 inch groups at 100 ever...But I can't consider myself a marksman of any sort either...and from one GM barrel to the next, they differ in ammo tastes...if I were the salesman who said you could shoot groups like that, I would smack myself repeatedly...

Realistic expectation for 100 yd group? - RimfireCentral.com Forums

Here is a good topic on 100 yard shooting with 10/22s...hope it helps
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Old November 7th, 2011, 08:38 PM   #5
 
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Green Mountian Barrel accuracy

Thank you much for the reply and the link for the encouragment. Furthermore, I'm sorry for my lame trust in the Green Mountian salesman that claimed 3/4" groups @ 100 yds. He wanted me to return the bull barrel because it was not fitted to the receiver properly. I think that their problem is that they got their "Gubment contract" and don't care too much about the consumer any more. At least that is my experience.

Thanks again for the insight and the link...........I'll review and savor!

Regards!
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Old November 8th, 2011, 04:58 AM   #6
 
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Green Mountain are good barrels, I have one on my 10/22...
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Old November 8th, 2011, 08:16 AM   #7
 
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Green mountain isn't the "be all end all" of barrels, but for those of us who want better performance on a budget, they are a great choice. At 100 yards, as was implied, the 22lr goes through sonic transition, and groups open up. Your 22mag is still over the hump into supersonic at the 100 yd mark.
Try some subsonic rounds at 100 yds, or hi-velocity rounds out to 75 yards, and you will get more realistic assessments of the barrel. 50 yards for certain, depending on conditions and the individual bullet, some are transitioning before the 75 yard mark. Every barrel does have its own best ammo. Try a few different makes.
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Old November 8th, 2011, 11:31 AM   #8
 
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For the price of CCI minimags, I would try Wolf Match Target a.k.a. SK-Jagd Und Standard Velocity. Shoots very well in many rifles. 100 yards is a stretch for outdoor .22 lr accuracy, especially if you are thinking of half-inch groups. However, 2" groups is plenty accurate for taking long shot while hunting. Set up 50 yards outdoors like the bench rest shooters and test ammo there. A friend of mine shoots in an old chicken coop, which is about 50 yards long, with his ultra pimped 10/22 and does shoot markedly better than out in the wind. There are .22s that will shoot .25 in groups at 100 yards indoors. My green mountain barrel didn't shoot as good as my Midway SS bull that was made by wheeler engineering, but it wasn't horrible. A friend of the family bought about a dozen Green mountain barrels years ago and sorted through them for the best shooters and gave me one that he didn't want. My buddies Mark II BV savage bolt action in .22 shoots 1" groups pretty reliably at 100, always outshooting my 10/22. But my 10/22 could keep up just fine at 50. Salesman are always full of shit....

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Old November 8th, 2011, 01:57 PM   #9
 
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What the barrel can do depends VERY much on 1) how the set-up is and 2) finding the ammo favored by your particular barrel. In reference to #1, it's more than just removing old barrel and sticking a new barrel on and. Free float or bed. Then there's the ammo. It's not as simple as "this is what I want to shoot so this is it." Each barrel will have it's preferred ammo/load. Could be inexpensive bulk stuff or it could be pricey match stuff. Having a GOOD trigger is also part of the equation as is GOOD optics. It all works together as a unit. A weak link in one area can easily effect the whole package.
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Old November 8th, 2011, 04:48 PM   #10
 
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Thanks to you all for the input and insights. I figured that it was a combination of factors and the transition to sub-sonic was something that I did not account for on the way to 100 yds. I do have a trigger kit with a 2.75# pull. My barrel is free floating and didn't think about bedding because of the difference in thermal expansion between the steel and wood and possibly the different harmonics if they came into contact. I have seen some .22 rounds that are lighter and faster and might stay supersonic out to 100 yards but the question is are they bad for the barrel. I have tried some of the Wolf target rounds which are sub-sonic with the old barrel and they really drop. The real bummer is that now that it gets dark quicker the only time to experiment is on the weekend.
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Old November 8th, 2011, 05:09 PM   #11
 
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One build of mine loves the Wolf target stuff - even at 100 yrds. Look at the better match ammo - it's not the hi-pressure, supersonic, maxi-zoom stuff. It's about consistency.
The whole thermal expansion thing...well, for one its target shooting, not a frenzied rapid fire circus. Take your time and make each shot count. It's also gonna need to get REALLY hot to have enough effect to worry about thermal expansion. Bedding done right is a good thing, done wrong and well, it's worse than without ever could be. Not saying you need to bed at all, just an option. Depends on how far you wanna go with this. (you bed the action and maybe the breach area of the barrel, not the whole thing)
Remember too that while it's certainly a better barrel than what's normally factory installed, it's still not one of the upper rung barrel on the ladder. GM make great stuff and for a best-bang-for-the-buck barrel, they're IT. Still, they're not at the same level as Kidd, Volquartsen, Lilja or even Whistle Pig. The claim about it being a 1/2"-3/4" 100 yd barrel...well, you'll g through a LOT of ammo trying to get there and need a finer tuned set-up than what is had now. Just kinda how it all works. That said, this certainly should be capable - with it being a packaged deal and the right ammo - of getting groups in the 1 1/2" range at 100 yds. Anything above that will be a bonus. If you really want 1/2" groups at 100yds...it's gonna be something more than a Gm barrel and 2.75# trigger kit.
Not to be discouraged though. Use this one as a building block, a stepping stone as it were. Shoot it and get comfortable with it. If the bug sticks with you, you can progress with another build with better parts and a finer overall package.
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Old November 8th, 2011, 07:53 PM   #12
 
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GM barrel expectations

Thank you for your insights. Bottom line is that this old 10/22 was my old squirrel gun that I bought just out of high school. Now I'm 60 and tinkering around with the upgrades and trying to see how good it can shoot. It's kinda like a sickness. When I was shoot'in my old squirrel gun at 100 yards with all standard stuff the bullets were all over the target at about a 6" group! Then I got on line and started "Googeling" to see how to trick it out and found out that some folks got more money than brains just to make the most awesome Ruger 10/22 on the planet! Well, I can have fun and realize that you can never consistantly put a 3/4" group at 100 yds. I guess it's the Zen of the 10.....22. Make the most of what you got, have fun and realize that you'll never put 5 in one hole...........Cause if you think you can you'll never have fun!

Off my soap box......and out of my metiphysical tunnel.
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