TheDude wrote:I’m using a 303 collet die with mine. Will measure the mandrel as I’ve not seen any neck tension issues with Sierra .311 174gr smks. Might have just got lucky with my brass having thicker case necks
Possibly... I tested with Hornady 174gr .3105; and few pulled surplus projectiles from Chinese, Russian and I suspect Yugo cartridges. Using PPU brass. All with same tension issues while using the original mandrel and better tension with 308 mandrel.
Actually, I think it may have been you who suggested 303 collect originally
So that was excellent.