Home Forums Reloading Varmint Rifles I am here to eat crow, having learned my lesson

Ok here you go, GRT defaults to 31 which is about average.

If your case capacity is 31.0 grains then



Decrease your case capacity 1/2 grain then



Decrease capacity 1 grain



At 31 2K overpressue, 30.5 your at ~60K, 1 grain your ~62K

Now if I had you exact case capacity to the top of the neck I could get closer. No way I would use that load at under 31 and I have seen variances between 29-32 grains dependent on brass manufacture.