Hi Frag Muppet

Can I ask exactly which brand of shotgun primers you're using ?

I have a brand new Westlake .357 and I've got a problem with the cylinder getting *very* tight when firing and I think some of my primers are just a shade loose and are moving back with recoil out of the pockets.

I'm using Remington STS209 primers - which are working perfectly on my Anvil Conversions Uberti pistol - and I wonder if they are slightly undersized.

Thanks
Paul M.