Ok so I'm fairly inexperienced with working on this platform. I'm an experienced "user" but we aren't allowed to do anything past basic maintenance on our work guns.
So I built my first personal AR to gain some more understanding. That being said here is a quick rundown on major components used:
Anderson lower and upper
Geissele SSA-E Trigger
Faxon 18" flame fluted barrel rifle length gas 1:8 twist
Fail zero M16 Nickel boron coated BCG
ATI mil spec buffer tube assembly
I was having issues with short stroking where it would eject the spent round but not pick up the next round and would not lock back on an empty magazine. Replaced the buffer with a very slightly lighter buffer weighing 2.8oz. That helped a little but more often than not had the same issue. Was thinking I would have to either get a lighter buffer spring or open up the gas port hole.
Anyway that was all using factory 55gr FMJ practice ammo. Yesterday I shot some hand loads using 68gr bthp and had zero issues with it cycling properly with the hand loads and would lock back on an empty magazine. Still won't cycle the lighter bullets. My question is it just a matter of dwell time being increased by the slower velocity of a heavier bullet or an increase in pressure from hand load vs factory? It was not a max load by any means.
I'm planning on shooting heavier bullets in this one, likely the 73gr eld-m, so do I just not worry about it or should I adjust something so that it will cycle all ammo?
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So I built my first personal AR to gain some more understanding. That being said here is a quick rundown on major components used:
Anderson lower and upper
Geissele SSA-E Trigger
Faxon 18" flame fluted barrel rifle length gas 1:8 twist
Fail zero M16 Nickel boron coated BCG
ATI mil spec buffer tube assembly
I was having issues with short stroking where it would eject the spent round but not pick up the next round and would not lock back on an empty magazine. Replaced the buffer with a very slightly lighter buffer weighing 2.8oz. That helped a little but more often than not had the same issue. Was thinking I would have to either get a lighter buffer spring or open up the gas port hole.
Anyway that was all using factory 55gr FMJ practice ammo. Yesterday I shot some hand loads using 68gr bthp and had zero issues with it cycling properly with the hand loads and would lock back on an empty magazine. Still won't cycle the lighter bullets. My question is it just a matter of dwell time being increased by the slower velocity of a heavier bullet or an increase in pressure from hand load vs factory? It was not a max load by any means.
I'm planning on shooting heavier bullets in this one, likely the 73gr eld-m, so do I just not worry about it or should I adjust something so that it will cycle all ammo?
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