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Posted: 4/2/2013 6:08:14 PM EDT
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I built my first AR with PSA LPK and a PK firearms upper.
In my quest for cheap ammo, I have purchased about 120 rounds of AR223 ammo by American Eagle and 40 rounds Tulammo. The Tulammo was horrible, I had almost a 30% failure to fire with some that looked like soft strikes on the primer. I ran the non fires through my friends Remington 700 and he got half of those to fire and 4 he couldn't even close the bolt the rest would not fire. I ran some blackhills and fiocchi through my AR and had no issues from either of the ammo. Last weekend I brought 80 rounds of the AE AR223 to the range. I only had time to shoot 40 rounds. About every 3rd round failed to fire. I cycled the bolt and fired the next round. It was kind of frustrating. Of the 13 or so that did not fire the first time, I could not get 6 of the 13 to fire on the second try in my rifle. My friend was able to get 2 of the 6 to fire his Remington 700 and the remaining 4 I chalked up as non-fireable. Has anyone had similar experiences with these types of Ammo? The Fiocchi Vmax ammo I have has not had issues. I am not ruling out it could be my rifle. Any comments would be appreciated. I am wondering if a stronger hammer spring would help. Edit: I should point out the AR223 ammo gave me a very nice grouping at 75 yards. |
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So upon inspection, the hammer spring may not be right.
http://i93.photobucket.com/albums/l67/Splitpi/image.jpg |
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Quoted:
So upon inspection, the hammer spring may not be right. http://i93.photobucket.com/albums/l67/Splitpi/image.jpg That's backwards. |
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Ok, I flipped the spring so that the legs now come from underneath and rest ontop of the trigger pin. The hammer seems to feel heavier now. Trigger pull is a little stronger now, but not much.
Thanks everyone for pointing out my faults! 
If this doesn't work, then I'll upgrade the spring to the wolf heavy, but I think flipping the spring is really all that I needed to do. |
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Quoted:
Ok, I flipped the spring so that the legs now come from underneath and rest ontop of the trigger pin. The hammer seems to feel heavier now. Trigger pull is a little stronger now, but not much. Thanks everyone for pointing out my faults!
If this doesn't work, then I'll upgrade the spring to the wolf heavy, but I think flipping the spring is really all that I needed to do. That should be all you need to do. I speak from experience. 
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