09-21-2011, 10:43 PM
Raider1v1 Wrote:Sorry, let me be clearer. I am looking for the amount you need to vary the load data to accommodate for the extra power of the large rifle primer vs the small rifle primer.
Completely different brass. LRP can't be used in SRP brass, and vice versa. It's just not possible due to the size difference of the primers.
If you're asking about regular SRP versus magnum SRP, adjust load down by ~0.5gr for magnum primers to be used with data for regular primers. Magnum primers are hotter, and usually generate higher pressure and velocity.
This is just my opinion based on experience with a different cartridge, so use at your own risk.
And if I'm off base and LRP Grendel brass exists that I'm unaware of, I apologize.
Drifter

