Goose Gestapo, I really appreciate your insight on the IMR4350 powder, I did slug the barrel and it was right at .311 and is in pristine shape, very sharp lands and grooves. Mine was made in 1955, and I believe it sat in the Armory for quite a few years. (very good condition) I bought mine just this year from an older gentleman that "just wanted it to go to a good home" per se. I posted pictures of it on this forum back around February or March of this year. I found my accuracy load to be 39.5 grains of H335, using a Federal Magnum Rifle primer, and 174grn Sierra SP/BT/HP projectile, the OAL was right at 3.085 in Sellier & Bellot casings. My best groups came right at 1.25" at 100 yards, using a portable shooting bench, and a lead sled, however at 200 yards they opened up considerably to 3", which I believe is my old eyes. Hopefully if the wind stays down this weekend I'll try the IMR4350 as I've loaded up several rounds using 42.0 all the way up to 45.5 grains. If the 43.0 and up show pressure problems I'll just pull the remainder, as I only have 5 of each, all in Remington cases (20 once fired). BTW I've got a bunch of PPU cases loaded up with H335 powder also and plan on taking my youngest son (40 years young) out with me later this weekend, as he has a lot better eyes than I have, and see what he can do with both loads. Reckon I'm going to have to order some .303 bullet molds for my Enfield and try cast bullets, it finally got cool enough out here lately that I can resume casting. What molds do you recommend?