glockgod
Member
In the process of switching from Rainier 9mm 147gr plated to Precison Delta 147FMJ bullets. Precision Deltas are about .020 longer than Rainiers so I will need to seat them deeper to get a 1.155 OAL. Should I start low on the powder and work my way up or just seat em and go. Current powder charge is 4grs Unique.