Crap!! Woops I mean 2209 - 2209! (super bad typo) sorry and good pick up swedeadmirer
i use 46.5 of 2209,
tried 2208, 2206H and they never came close .
less severe recoil, and the closest i have come to replicating Mk7 specs as to muzzle velocity,
With 174 gn sierras it was just 30 fps less than Mk7.
It produced the best accurate loads.
I think the load closest to Mk7 is the only way to go.
After all they didn't change the ammo spec for what?50-60 years?
but they did change the rifles it was used in.
Still very hard to better 2 MOA with a proper group of 5 Rds!!
Sorry Fenn had to drop that one in, I have never used 3 rds as a standard for grouping capacity, 5 just gives you the chance to muck it up a bit more and I think gives a truer account of grouping capacity. I think it has always been the standard.
I don't know how many times i have fired 3 and they where under 1 inch, then fired 2 more thinking I did everything the same , only to find the group expand out to 2 or more inches.
After all you can only tune something to the max then there is no more to tune!!!