TKS Fatboy - I've and thousands and thousands of rounds. I do partical full length size some calibres though, only sizing enough of the neck to hold the bullet.

My .375/06IMP runs 2,470fps with 300's and 2,675fps with 270's, H4895 and BLC2 being the powders of choice. Both of these bullet weights exceeds 1912 .375H&H bllistics and the 270gr. load duplicates actual modern factory 270gr. for the H&H.

My 9.3x62 also duplicates these ballistics as it has identical case capacity to my .375/06IMP case.

Neither have ever been more than neck sized, same as everything else I've ever shot.

Full length sizing is a recipe for head separations in most calibres by people who do not totally understand what they are actually doing.

Belted cases are the worse for short case life due to lousy headspace tolerances in both brass and chambers.

Head separations only happen in modern cases due to excessive headspace - the rifle's chamber, or caused by the loader shoving the shoulder back.

I have never had cases get tight in the chamber and need to be bumped or FL sized. It has never happened to me. Some rifles I have and have had, had over 6,500 rounds through them, only ever neck sized.