(03-09-2023, 10:01 PM)popgun Wrote:(03-09-2023, 01:51 PM)GRH Wrote: But what of Varget?
It's right there near the same burn rate, albeit ever so slightly slower. GRT prediction with a 105gr, well over 90% case fill with my measured cases, mid 90's burn rate, efficiency 29% with a more room to go before peak pressure (gas gun).
Varget works great in my gun. A little slower velocities than Lever but better accuracy. The new StaBall match seems to be close to Varget also but a ball powder. The few people I've seen try it shows promise.
I was excited at the prospect of a stable ball powder and as chance would have it, Charlie over on GRT Discord has worked up a GRT model for 6ARC bolt gun.
Unfortunately when I plugged in my 20" barrel length and max PSI while leaving a margin of safety, the result is pretty anemic. A longer barrel and the higher pressure of a bolt gun seems to make all the difference and I would be all over it in that case.
SI VIS PACEM, PARA BELLUM