6.5 Creedmoor Lapua brass. Sm primer vs Lg primer
- Thread starter krw
- Start date
More availability along with more brand options for SRP's.
In terms of performance, SRPs can actually perform better than LRP's . . . depending on powder being used and in what temperature they're at when used in larger cartridges. They work great in my .308, but I don't shoot in temperatures below 40°F.
Small primer brass has more material in the base so the primer pockets hold up better if you are shooting hot loads.
I prefer SRP for all cartridges that I shoot often. Look into Alpha Munitions if you want some Lapua-quality brass that’s almost always available, and made here in the U.S. 
What firing pin size can you use on SRP brass? I am looking at an action that has 0.070” firing pin diameter w/ a 0.05” firing pin profusion. I notice most custom actions have a firing pin closer to .062, so not sure if .07 would be getting to LFP/LRP territory.
Don’t know much about how during pin protrusion affects it though?
Don’t know much about how during pin protrusion affects it though?
Back in 2019ish I purchased 500 6.5cm SR Lapua Cases. I received 400 SRP, and 100 LRP. I didn't make a stink about it at the time. Left the LRP's alone for almost 3 years. Finally got around to loading with them. If there is any deviation in my shooting, I can't tell. I think that the LRP's shoot the same as the SRP's. Just loaded the LRP's for a 3rd time about a month ago. It is nice to have more primer choices though with the SRP's...
