monticellotdm Member Posts: 256 ✭✭✭
edited May 2011 in Perry Shooter Competition Shooting and Reloading Forum
Thinking of starting to reload my own. 270 wsm, After looking over some of the load data many of the powder charges only fill the case some as low as 60% if that is so... then there may be almost 3/4 of an inch air space in the shell case or more. If holding the rifle down from an elevated position... dropping the volume of powder to the bullet and leaving the air space between the primer and powder... does this large void cause any pressure or velocity changes when fired? If so should I choose a powder combination that more fully fills the cartridge?