The 375 sizes the hull, and a little bit of Imperial Sizing Wax helps ALOT
But I do MEC Supersize first, especially on the steel head hulls.

https://www.shotgunworld.com/threads/ponsness-warren-375.459528/

https://www.reloaders.com/products/375-manual

Last edited by skeettx; 02/15/24 05:44 PM.

USAF RET 1971-95 [Linked Image from jpgbox.com]