This might tickle your funny bone, since you have loaded rifle brass..
About 15 years ago I bought a Ruger Blackhawk 44 mag, and I too wanted to handload for it. Now I had done shotgun loads before but never rifle or pistol. So I bought a Sierra reload manual and the hardware to do it. So I preceded to load some shells, weighing each powder load. However when I pressed the bullet into the case the force needed to seat the bullet deformed the bullet top.. So I went back to the reloading shop and showed the owner a couple of the loads. He said it looked fine to him.. Next I went to the range and fired 3 rounds. Each one had a tremendous recoil... like the hand went straight overhead.. I quit and tried to extract the cases....no luck. Had to use a screwdriver to pound them out..
Here's what happened....... I had a new powder scale and I misread the powder weight, and was way over the recipe which was why the bullet wouldn't seat.... Probably most guns would of fractured,, not that Ruger 44.. Damn I was lucky..... God looks after the stupid I guess... Anyway get a Sierra or Hornady book they have proven loads.. I like the Sierra...
Here is another loading 'snaffu' I made.. My son in ND has a 7x57 and wanted me to load some 'hotter loads for him. So I did, sent them to him and he used them for deer.. Monster deer walks out, he squeezes trigger, 'click'. Jacks shell out squeezes again, 'click'...... He hadn't tested the loads prior to the hunt... Well seems like I had pressed the primer to far into the case and his firing pin couldn't strike it hard enough. I had used a hand press...... Live and learn...
Buck walked away .