Originally Posted by MtnT
I have a couple boxs of 30cal 190 accubonds
And a whole bunch of social distancing time

What powder should I use for my invention
I tried r17 and got good velocity but erratic accuracy


In the cupboard on hand I have
R19
Big Game
V550
R17
Varget

I have a 20" barrel, shoots 1/2-3/4" groups w hornady factory

A 20" 6.5 shoots 140g at 2600fps or so

Looking for that or faster w the 190's

What do you think?



You didn't say what velocities you were achieving from the .308. but I'd stay with the Rel 17 and drop the charges a grain or so and work on the seating depth. 2 together and 3rd apart means the OAl is too long. Large equilateral triangles means it is too short. Apply minor adjustments to the seating die of around 1/8th turn. The more slim the barrel, the turns are less and the results much more. I have recorded dramatic results with even 1mm (..040") turns in very light barrels.

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