450 Bushmaster pistol issues.
Posted: Sun Jun 14, 2020 8:31 pm
Build specs:
Upper: Acme Machining 10.5" 450b bull barrel/toolcraft standard bolt.
Lower: Aero Precision M4E1
LPK: Rock River Arms Standard
Stock: SBA4 With carbine buffer tube
Recoil Spring: CMMG standard carbine
Buffer: Spikes Tactical ST-T2 4oz
My brass is ejecting at 3-4 oclock
First two shots left twist tear marks on casing.
Rest of shots left extractor marking on the the face and side of casings without tearing.
I have access to a heavier buffer spring but would I be better off with a heavier buffer?
Upper: Acme Machining 10.5" 450b bull barrel/toolcraft standard bolt.
Lower: Aero Precision M4E1
LPK: Rock River Arms Standard
Stock: SBA4 With carbine buffer tube
Recoil Spring: CMMG standard carbine
Buffer: Spikes Tactical ST-T2 4oz
My brass is ejecting at 3-4 oclock
First two shots left twist tear marks on casing.
Rest of shots left extractor marking on the the face and side of casings without tearing.
I have access to a heavier buffer spring but would I be better off with a heavier buffer?