RJ556
Buckeye
I made a range trip today to shoot a few rifles. Among them was my 77/44. The loads were hand loads of H-110 powder and 180grain and 240 grain bullets. Both loads were about .5 grain under maximum (according to a couple of reloading manuals. I used Winchester large pistol primers which are supposed to be good for standard and magnum loads. When I cleaned the 77/44, I noticed three spots on the bolt face that would not clean off. I looked at them through magnification and found them to be pits caused by gas cutting. Then I inspected my 20 fired cases with the magnification loop and found three with ruptured primers. The primers were not flattened out very much, but definitely ruptured. I bought the primers no more than a few months ago. I do believe this is the first time that I have used them with H-110 propellent. I will not load any more H-110 loads with these primers. Has anyone else out there had any such occurrences with 44 magnum loads?