Accuracy Issues w/ Carbon 15 Rifle?
I have a Professional Ordinance Carbon 15 rifle. I have had it for 6 or 7 years, but never been able to get it to shoot very accurate.
It will put 2,3 or 4 shots into a fairly tight group, then the next group will be in a 3 or 4 inch pattern. And this is at only 50 yards. Can't seem to find any rhyme or reason for the patterns either.
I have exchanged scopes, mounts, let the barrel cool, shot w/o the muzzle brake/suppressor, extra barrel cleaning, and tried different ammo. All the ammo I have shot has been 55 grain, but to me it doesn't seem like the type of issue to cause this big of groups.
I really don't think this is a shooter issue as I've shot some great groups with alot of other rifles.
I understand the design was bought and is still produced by Bushmaster. I contacted them and they no longer work on these rifles. Alot of the parts are gun specific and won't interchange w/ most AR's. There doesn't appear to be any parts available other than finding another rifle. The rifle functions and shoots great and at 4#'s it's very light and unique.
Bushmaster suggested that I could buy another bolt and barrel and try them. The bolt has rounded lugs on it and is slightly different than most Ar's. The barrel is think w/ fluting and I believe 1/9 twist chambered in 556.
Everything is tight and in good shape and I can't see where the gun has been shot alot. The receivers lock up tight.
One idea I had was to remove the barrel and retork it into place. Not sure what this would accomplish, but wanted to ask.
Shane, no offense but, sell it. The Carbon 15 rifles were piles of shit then, and they still are now. Bushmaster has a reputation for making junk.
That says quite a bit.
Originally Posted by ShaneinWI
Sell it and buy another AR... from a reputable manufacturer.
None taken. But I've never sold a gun and don't plan to start now. I just built (assembled) another AR and it shoots great. Shot nice little 1/2" groups last night. Is there anything I can do to help the accuracy of the Carbon rifle? Or is it just is what it is kind of thing?
Is it one of the barrels with the QD muzzle brake? If so, have you shot for group with the brake removed?
Originally Posted by glocktogo
Originally Posted by ShaneinWI
Bill Tidler Jr.
...We have long maintained that the only accessories that a 1911 needs are a trigger you can manage, sights that you can see, and a dehorning job. That still goes.
Yes, it has the removable brake. I shot w/o it without any improvement. I talked to a guy at Bushmaster about designs who said that wasn't the best idea. Not sure why. The upper receiver has a slide on rail which attaches w/ a single screw. He said actually that is a good system. Bushmaster has improved the design to work the bugs out since Professional Ordinance built them. The design must have had advantages to some as they are still building the rifles.
The allen screw was alittle loose on mine so I drilled and tapped it for a larger screw which made things really tight.
The trigger was a full 10# pull before I had a smith clean it up to a clean 3 1/2#'s. Always thought that was the problem, but no.
I read somewhere that if x-rayed only the bolt and barrel show up as the rest of the rifle is carbon. Which is kind of neat, but not real usefull to us good guys.