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Posted: 4/16/2007 12:50:26 PM EDT
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Hello, I just got my first AR15 and I love it. My Father had purchased a case of some military surplus ammo with "RP" headstamp on it (I think). Anyway, It would not cycle in my 20 mid gas tube length AR. It would only fire a single round and then click. I later found out that it was short stroking the bolt because it was a british surplus and was designed for only firing in short gas tube barrels because it was not "Full Nato power". So my question is are there any other ones I should stay away from? I know LC (Lake City) is OK but who else may have this problem? Robb |
Ditto |
Knowing more about your particular AR would probably help figure out whether it was actually that particular ammunition or something else; there are a number of potential causes of short stroking, including poorly attached gas keys and not enough lube in (not just on) the bolt carrier. |
Yep You are right. It is RORG. My AR is a DPMS lower with RRA trigger. It has a 20" DPMS 1X9 Barrel fluted and a fully floated hand guard. It was built by my favorite gunsmith (also my Brother :) ) and he tried everything to get that stuff to shoot. When he switched to some of his LC stuff, it fired and never missed a shot. I got the story I related earlier from a local Gunshop that builds lots of custom ARs. The minute I showed him the case, he knew exactly what was wrong. I picked up some Remington UMC 55gr from Walmart to try at the range. I will see how that goes. I was just curious if any other surplus stuff would be made similarly. Robb |
Stuff like this happens...
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Is your 20" a mid length gas tube type? That seems to be what some guys think is the problem with this particular load. Like I said, the LC stuff works great. My gun never missed a shot. My borthers all have 16" barrels with the shorter gas tubes. They all seem to use it fine. Either way, I will just stay away from that load. Robb |
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