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This involves an 18" JSE upper mated to a PSA lower. A couple of typical extras (B.A.D. lever, BCM charging handle, stuff like that), nothing to effect accuracy.
Two new variables;
1) R&R barrel to replace drop-in handguard with a FF tube (ALG Defense).
2) Added a Vortex Spitfire 3x red/green reticle electronic sight.
Today l took it out and could barely get on paper. Since it was a private "range", l eventually walked myself in until I was about 10 FEET AWAY(!)... at that range l was hitting 8-10 inches low... holy shiite! The optic had no more adjustment left, that's why l started literally walking it in. from 25 yds.
The groups were consistent (such as they were) and function was 100%. No jams, FTE, FTF.
Bad barrel install? Incorrect torque, maybe? Shim the optic mount? I didn't level the optic, just mounted it a hoped for the best. Maybe I should have tried a set of MBUIS but l didn't have em with me today... I thought it was going to be a simple sighting-in.
What say you, AR gurus? Where did l drop the ball (or group... 8-10" at 10 FEET)? I burned up a lot of ammo* to find out l may have F'd up.
*cuz it was still shooting, even if l couldn't hit ANYTHING.
Two new variables;
1) R&R barrel to replace drop-in handguard with a FF tube (ALG Defense).
2) Added a Vortex Spitfire 3x red/green reticle electronic sight.
Today l took it out and could barely get on paper. Since it was a private "range", l eventually walked myself in until I was about 10 FEET AWAY(!)... at that range l was hitting 8-10 inches low... holy shiite! The optic had no more adjustment left, that's why l started literally walking it in. from 25 yds.
The groups were consistent (such as they were) and function was 100%. No jams, FTE, FTF.
Bad barrel install? Incorrect torque, maybe? Shim the optic mount? I didn't level the optic, just mounted it a hoped for the best. Maybe I should have tried a set of MBUIS but l didn't have em with me today... I thought it was going to be a simple sighting-in.
What say you, AR gurus? Where did l drop the ball (or group... 8-10" at 10 FEET)? I burned up a lot of ammo* to find out l may have F'd up.
*cuz it was still shooting, even if l couldn't hit ANYTHING.