WARNING: Varget and IMR 4064 eats barrels with these loads up to 80g Sierra blitz bT. AA4064 burns a lot cooler, just as accurate.
Calvin, 257 Weatherby, 80-85g at 4130 is real world with R#19, try cci 250 and fed 215 primers.
Calvin, 257 Weatherby, 80-85g at 4130 is real world with R#19, try cci 250 and fed 215 primers.