Originally Posted by retiredcpo
I have been shooting 64.5 gr of 4831 under 168 gr bergers
for about three months now with no problems no hint of pressure signs
but the temp has never got above 60 and was cloudy most of the time
today was sunny up around 70
and had Major pressure signs bolt extremly hard to lift primmer flat
So ill be backing hte load down to 63 gr to where i started.
The WW 2 H4831 was my favorite in a 7 rem mag with 67.5 grains behind a 168 SMK.
The newer H 4831 had to be reduced to 65.5 grains and stilled matched my velocity.
When I switched to H4831sc I had to reduce it even more to keep the pressure with
64.5 is still a hot load and will cause problems if it is left in the sun or a hot car.
If you are seating close to the lands this could cause pressure to be on the high side.
J E CUSTOM