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AR15.COM
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8/16/2009 1:39:58 AM EDT
I have some underpowered ammo that never cycles in my Bushmaster AR. I tried it in my 556 ER hoping for better reliability but at the normal pressure setting it's only semi-reliable. At the higher setting it cycles flawlessly, but I am wondering if there's a danger of harming my 556 if I fire regurlarly at the higher setting. I'm of the mind that if it's (the ammo) weak at the low setting it should be fine and produce normal pressures at the higher. Any thoughts/opinions would be greatly appreciated.
9/1/2009 4:58:36 PM EDT
[#1]

 I say you should be OK to use underpowered ammo with higher setting if this fixes the problem .
 To me, underpowered ammo with high setting is the same as "normal" ammo with normal setting.

 BTW....What kind of ammo you have that is underpowered?
9/4/2009 2:45:13 AM EDT
[#2]
Quoted:

 I say you should be OK to use underpowered ammo with higher setting if this fixes the problem .
 To me, underpowered ammo with high setting is the same as "normal" ammo with normal setting.

 BTW....What kind of ammo you have that is underpowered?


Agreed

I had a friend give me some ammo he reloaded a little too light. He finally got tired of trying to cycle it through his AR. I just used it in my Sig on the higher gas setting and it all ran flawlessly. It was over 1k rounds and I never had any problems.
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