azrocks
Member
- Joined
- Jun 28, 2016
- Messages
- 659
Backstory: 4 9mm handguns (2 glocks, 2 walthers). All have shot pretty much POA with at least 2 brands of factory ammunition... 115g Magtech FMJ & 115g Federal FMJ. I've run other ammo through as well and never noticed much variation in windage.
Now all 4 guns are shooting left with my reloads: 1" - 2" left of POA at 30 feet.
I'm using 4.1g titegroup, federal brass, win spp primers, Precision Delta 124g FMJ bullets. OAL is 1.133 for the Walthers and 1.142 for the Glocks (these OALs gave me the tightest groups). Crimp is between .377 & .379 (.378 avg).
I thought the lower velocity (these are softer-shooting than factory) was the culprit, but I've tried charge weights of 4.2 & 4.3g titegroup also, and it didn't seem to change the lateral component of POI.
Is this normal, and if so, what variables are likely the source of the change?
No idea what ammo the factory used for their test target, but their hits were also centered on the bullseye, just like the aforementioned factory loads.
Now all 4 guns are shooting left with my reloads: 1" - 2" left of POA at 30 feet.
I'm using 4.1g titegroup, federal brass, win spp primers, Precision Delta 124g FMJ bullets. OAL is 1.133 for the Walthers and 1.142 for the Glocks (these OALs gave me the tightest groups). Crimp is between .377 & .379 (.378 avg).
I thought the lower velocity (these are softer-shooting than factory) was the culprit, but I've tried charge weights of 4.2 & 4.3g titegroup also, and it didn't seem to change the lateral component of POI.
Is this normal, and if so, what variables are likely the source of the change?
No idea what ammo the factory used for their test target, but their hits were also centered on the bullseye, just like the aforementioned factory loads.
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