6PPC fireforming load with H322

[Romo1994]

Hi

What would be a good load for 6PPC brass from .220 Russian with H322 and a 65grain bullet? The rifle is a Kelbly Panda action.

Regards

 

[LHSmith]

Start @ 27.5 gr/ max. ~29.0 gr. This is for recent lots ( last 10 years). H322 through the years has varied greatly in burn rates. Does not do well in higher temps.
For fireforming I have gone as low as 26.5 gr.- but I prefer to expand the case as much as possible on initial firing.

 

[SGT. Slaughter]

Older lot of H322 26.8 GRAINS was running 3020 fps mv out of a 21" barrel for fire forming.