Home Forums Hunting & Shooting Hunting Rifles Fireforming with pistol powder

I was taught by the guy who ran the old Speer ballistic lab as follows:
1. Use Bullseye
2. Start with 15-20% weight of the maximum charge for the parent cartridge. Example: if max charge is 60 then start with 12 grains of Bullseye.
3. Use a PISTOL primer, only for forming!!!
4. Increase charge until shoulder is formed to the point it looks similar to an unfired case
5. Take all remaining pistol primers and store them away from your rifle primers
6. Use filler with tissue
7. Periodically use brush to freshen chamber if doing lots of cases