LSLGuy made a lot of the points I would’ve—I’d just add that I’d want to see his record book for his loads. If he’s as painstaking as you say, he probably has one. I know my dad and I recorded, back when we shot rifles together and reloaded ammunition, lots of data points for each series of reloads.
The continuing with the range session after the KB, is really disturbing. I’ve never had one, but if we had, we’d have stopped everything until we figured out what the hell happened. It’s what we did when we figured out the Japanese WW2 war trophy I was using as a deer rifle, didn’t have the best safety on it…(Thank God for The Four Rules). Chronos is also right, IMHO, that two KBs right after the other means he doesn’t have sufficient control of what he’s doing. Res ipsa loquator, and all that.
I’ve put too much powder in a cartridge before—wasn’t watching what I was doing when loading two separate calibers with imr-4895, thinking I was “saving time”—and I transposed two numbers. Thankfully, I wasn’t anywhere near max for the one I screwed up, though there was some head scratching at the range about why the bolt was stiff to open, and the primers looked all jacked up…
He needs some hard questions asked of him, IMHO, Mister Rik. It’s a firearms’ safety issue, and there’s been two catastrophic screwups—pride shouldn’t enter into it. Firearms safety is one of those immediate issues that transcends etiquette or pride, IMHO. At least, that’s how I was taught.
EDIT: What is with the formatting on this board, re, the small right hand margins? Posts didn’t used to look like bad cut and pastes from Word to Hotmail? What gives?