Does anyone have a good resource for comparing powders volume to weight in grains? What I want to do is be able to tell before I buy approximately how full the brass case will be at a particular load. Example: 51 grains of IMR 4064 fills a 30-06 case to about midway up the shoulder. When I seat the bullet to match the riffling this leaves me with a lot of free space in the case. A bulky powder would help over come this problem.
Does anyone have a good method to determine the rate of twist in an old barrel?
I’m trying to get the bullet to chamber just shy of the riffle lands, does it matter how much of the bullet is left inside the case mouth? One brand of bullet needs to have all but 1/8 of an inch out of the case.