I've been weighting 257 Roberts case weight. The R.P cases that I have weigh from 168.4 to 174.0gn. Nosler cases weigh between 165.8 - 167.4gn.
Is the 5.6gn variance in case weight for R.P cases enough to make a big difference in pressure when loaded?
Last edited by 308ld; 01/15/21.
