I'm in winter boredom and getting a cast load worked up for a Browning 1885 7mm Mangle-Em.
I'm using H4227 (because I have tons of it) at 20g with a 145g GC bullet.i am having intermittent stringing so I began tipping the muzzle up last time out and it improved. Occasionally with this though the hammer slapping the pin is definitely *before* the boom.And then goes a 3" high shot!!!
I don't like this.The 4227 teases me with near moa groups but it's time to go back to 5744.
anyone else run into delay fire with 4227 in large cases?
I use this same powder all the time in 32-40,38-55 and 33-47( roughly 13-15g) with not an issue. I understand the capacity is more in the big magnum case but this seemed odd to me.