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 ammo
A 20" 6.5 shoots 140g at 2600fps or so
Looking for that or faster w the 190's
What do you think?