I have a beautiful K11 Schmidt-Rubin rifle that shoots like a charm. I've taken it to 600 yards consistently using PPU ammo which I haven't been able to do so with any of my other vintage rifles (Enfield, Mosin Nagant, SKS, Mauser, Arisaka, Carcano...). I want to reload for it since it's hard to find ammo these days and I already reload for my long-range rifles (Bergara 6.5CM & Tikka 7RM). I bought Redding dies and then I was told by a friend that the Redding dies are actually made specifically for the K31 chambers and NOT for the K11. I am getting ready to return the Redding dies and buy another brand which I've been told are designed for the K11. Hornady even makes separate ones for each. I'd love to hear comments and confirmation of this information. The odd thing is that the GP11 ammo shoot in both rifles and with the PPU 7.5x55mm ammo I was getting very good results. I have all the PPU brass I shot and plan to use H4350 powder. I only need light loads for target shooting up to 600 yards and maybe 1000 later on. Hodgdon lists H4350 starting loads for only 4 bullets and I was leaning towards the 175gr HPBT Sierra Matchking, so 44gr seems to be the starting load up to a Max of 48 gr. I'm working out recipes and procedures to figure out optimum component combinations of bullet, power load, primer, and seating depth. Should be fun. I would appreciate your comments and suggestions.