TackDriver284
Handloader
- Feb 13, 2016
- 2,543
- 2,079
When testing @ 100 using the .308 and 168 SMK / Varget. I used 43.8 grains at 2740 fps average, used a P35 and I am seeing ES of around 25 to 30 fps and I don't like it and knew what will happen at 600 yards. @ 100 yards it shoots .1 to .2 MOA which is nice, but,,,,I won't use it beyond 600 yards.
Tested @ 600 yards, and vertical is about 4.5 inches and an inch wide and I want to fix it, so I went home and tried different primers, BR2 which I'm using, CCI200 and FGM 210 and tested again @ 100 for ES, and same variation of 25-30 fps.
I switched to Hornady 168 BTHP and I'm getting the same 25-30 fps variation.
I'm using .001" neck tension, cases are fired 2 X, annealed until it barely glows under no lights and pull out of the flame, powder is weighed by the kernel, I bumped shoulders .002" using a bushing die, seated .030" off. | I can't think of anything I can do to fix this high ES.
I could guess maybe change the neck tension to .002" or change powder to IMR 4064. But damn, Varget is a fine powder for the .308 and I want single digits.
My 6 BR ( Varget ) and 6.5 Creed ( H4350 ) has 3 to 4 ES that I'm happy with. But not the .308
What do you guys recommend I do to get my high ES fixed?
Tested @ 600 yards, and vertical is about 4.5 inches and an inch wide and I want to fix it, so I went home and tried different primers, BR2 which I'm using, CCI200 and FGM 210 and tested again @ 100 for ES, and same variation of 25-30 fps.
I switched to Hornady 168 BTHP and I'm getting the same 25-30 fps variation.
I'm using .001" neck tension, cases are fired 2 X, annealed until it barely glows under no lights and pull out of the flame, powder is weighed by the kernel, I bumped shoulders .002" using a bushing die, seated .030" off. | I can't think of anything I can do to fix this high ES.
I could guess maybe change the neck tension to .002" or change powder to IMR 4064. But damn, Varget is a fine powder for the .308 and I want single digits.
My 6 BR ( Varget ) and 6.5 Creed ( H4350 ) has 3 to 4 ES that I'm happy with. But not the .308
What do you guys recommend I do to get my high ES fixed?
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