@Frank Green
Guessing that in your FAFO you have played with every combination of barrel out there looking for the Holy Grail.
Here is a data set from one of your creations you won’t have to spend time or money on.
21 inch carbon steel, conventional lands and grooves, 9.5:1 left hand gain twist to 8.75:1.
I wanted to FAFO for myself and just try something different from the 11.25:1 and 10:1 all my other .308s are. Didn’t know what to expect.
I’ve got less than 300 rds on this barrel.
This was today at 300 yards…
First 5 were low using 1.4 mils of E. I cranked up to 1.6 E which seems an awful lot. .308 is usually 1.3 to 1.4 for me. I’m going to confirm my 100 zero but this is same setting I used at Sig for a class and it did fine.
Unsure if clean barrel needs some fouling to settle in. Shooting infrequently these days I usually soak barrels after a range session and put them away with a film of kroil to sit muzzle down for months. Guessing most of the kroil ends up in my muzzle cover.
12 shots of 175 FGMM in a 1.5 inch diameter circle once the rifle and I started settling down. I could probably drag the ring down/slightly right and add two more but I’ll call those pulled.
@LRI fantastic bottom metal set up that uses AI mags. Single Fed the 3 rounder flush mag today….
Guessing that in your FAFO you have played with every combination of barrel out there looking for the Holy Grail.
Here is a data set from one of your creations you won’t have to spend time or money on.
21 inch carbon steel, conventional lands and grooves, 9.5:1 left hand gain twist to 8.75:1.
I wanted to FAFO for myself and just try something different from the 11.25:1 and 10:1 all my other .308s are. Didn’t know what to expect.
I’ve got less than 300 rds on this barrel.
This was today at 300 yards…
First 5 were low using 1.4 mils of E. I cranked up to 1.6 E which seems an awful lot. .308 is usually 1.3 to 1.4 for me. I’m going to confirm my 100 zero but this is same setting I used at Sig for a class and it did fine.
Unsure if clean barrel needs some fouling to settle in. Shooting infrequently these days I usually soak barrels after a range session and put them away with a film of kroil to sit muzzle down for months. Guessing most of the kroil ends up in my muzzle cover.
12 shots of 175 FGMM in a 1.5 inch diameter circle once the rifle and I started settling down. I could probably drag the ring down/slightly right and add two more but I’ll call those pulled.
@LRI fantastic bottom metal set up that uses AI mags. Single Fed the 3 rounder flush mag today….
Last edited:
