I recently worked up my first batches of hand-loads. I loaded 44 specials into once fired brass with 200 grain jacketed hollow points and 5.6 grains of Bullseye powder and CCI No. 300 primers. Rounds were fired through a S&W 629 44 mag.
Approximately 20% of the rounds failed to ignite and the indentation on the primers looks pretty insignificant compared to the rounds that did fire. I was thinking perhaps I seated these primers too deep but an experienced hand-loader that I work with says the CCI primers I'm using are too hard and that I should switch to Winchester primers.
Does this seem like sound advice? Does anyone have any thoughts or similar experiences?