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Posted: 12/16/2002 8:06:50 AM EDT
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Gentlemen, I need some input and comments on bolt-up. Obviously I am addressing here the AR15 rifle. I have a Colt Lower Rec. w/ a Bushmaster M4 Upper. I used the bolt and carrier from the original (all Colt) rifle and just put it in the BushM4 Upper when I bought it. I did not buy a new bolt and carrier with my upper rec. I never had the problem with bolt 'lock up' with the original rifle and had hundreds possibly thousands of rounds thru it. The Bushmaster upper worked flawless for me for about 9 months and on my last outing the bolt started locking up in the chamber. I got off four rounds and the 5th and 6th both locked up in the chamber. I had to disassemble the rifle both times to disengage the bolt from the underside (inside) of the receiver. The hammer fell on both rounds and both did not seem to (at least felt like) the bolt did not totally go home. I have never had this problem with the rifle before. I am veteran USMC and have extensive training and combat experience with the M16/AR15 rifle. I do not make any claims to being an armorer, however; I can disassemble and re-assemble the entire rifle effortlessly. Moreover, I keep my weapons immaculately clean (USMC style) and would be acceptable to any USMC Armory. Any possibility of a gunked up weapon is just not an option here in regards to the problem with the bolt. Weapon was clean with light coat of oil. Can I get some opinions here as to what I might look for? Only other thing I can think is that I was using a box of RELOADS that I purchased at a gun show. The rounds looked fine I just don't have the eye to know if they were out of spec. Thanks for any help guys. Best Regards, and Merry Christmans for USMC Texas |
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Quoted: should I trash all the reloads or continue to try them? Can you think of anything else that may have caused this. I keep my toys in top shape and safe kept! thanks Mr. Waldo Semper Fi You can buy a wilson case guage and drop them in to check the sizing, but checking case length on a loaded round is much harder to do. As for other things...not from the info you gave in your first post, unless I misread about the bolt. You have shot it in the new upper before this batch of reloads without a problem, correct? I take it you have shot it with factory ammo without a problem? Gunshow reloads are dicey to say the least. Personally, I would never shoot a reload other than my own. |
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I have shot plenty of factory ammo. Federal, surplus, Wolf (sorry), etc, etc. To clarify, the bolt was taken out of original Colt Rifle. I am using it in the new BM upper. No problems ever before this. I have used reloads from a reputable shop that work but these are new reloads to me from a new supplier. Should I expect my rifle to be selective when it comes to ammo or should I say...should I expect it to not digest everything. If you feel its worth my while to get a case gauge and check the ammo. The more I look at it there are some differences in tolerance slightly visible to the naked eye in terms of case length and the depth at which the balls are pressed. Does this further solidify your idea that its the rounds? For us guys who don't reload, yet, do you suggest just factory ammo? surplus? and suggestions for ammo to non-reloaders? Thanks again Waldo. Semper Fi |
| It sounds like you got a hold of some crappy reloads. If you do not reload for yourself, stick with factory, or surplus ammo.I would NEVER buy reloaded ammo at a gun show. They could be loaded with Bullseye, or some other powder. Surplus ammo is cheap, Wolf is cheap,and the Mil-Spec. stuff from Winchester and Federal is relatively cheap too. Why risk your rifle or your health shooting someone elses reloads. |
| I agree about the reloads. Don't use them unless you filled them yourself. For class III work, most guys even stick to mil-spec loads, not commercial. But I have used Win and UMC factory ammo without probs. If you save a buck or two per hundred to put in a thousand dollar rifle, it ain't good economics. |
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