“It’s 200fps over max load data, but tHeREs nO PResSuRE siGnS”
Welcome to the Hide, home of the pissing hot handloads.
If you think it's bad here, go check out long range hunting forum. They load .300NMs with heavies to .22-250 50 grain load speeds.
Okay, maybe I just thought that we owned that title.
Some people just are genetically predisposed to push the limits. I'm not one of them, but it can be fun to watch from a safe distance.
You'd enjoy hanging around myself and a few of my family members.
Most loading data is lawyered and watered down but every gun is different so precede with caution over max it ok to k ow whats max for yours. I wouldn't worry anybody else pressure cooker but yours.
I used to have an old speer manual that belonged to my one of my grandfathers. It had to be first or second edition. The max load for imr4831 in a 300winmag with a 180 wouldn't even fit in the case.
Then, in some other cases, as
@diggler1833 pointed out, some data isn't neutered. Dad's 270 for example. Dad always favored the 150's. The old speer manual listed 58gr imr 4831 max with a 150. Their load almost 30 years ago was 59gr. Shot good, no excessive pressure signs. Fast forward to 2025, I forget which book I looked at, max is 57gr, okay, cool. Old load 59, new max 57, I'll just start there and see what happens. Mistake.
I think max velocity was supposed to high 2800's. First shot stomped me. The hard plastic buttplate on dad's old BDL was imprinted into my shoulder and the Garmin said 3009 fps. I went in a pulled the rest immediately.
I tried reloading that first case, and when I tried to seat the primer I didn't feel anything. Lowered the ram and the primer was still sitting in the holder. Yeah, start on the lower side of somewhere in the middle.
The thing is, mostly none of us have pressure testing equipment, and by the time the brass starts to cry uncle we are generally way over pressure.
This is why I like to proof out a new load on the same brass I did load development with by running that 50 peices to death. It Let's me watch the primer pocket long term and see if it's a load I want to go into production with. Let's me check the die setting and compatibility with the chamber long term also.
Good point on running smaller batches of brass to death. I was one of those that if I had a couple hundred pieces, I would run through everything until it was all fireformed, then I'd go through it again.
The last one was my 300winmag. After about five firings on norma brass, I started finding cases that wouldn't fit in the shell holder anymore. Now I've got 200 pieces to weed through and shuck the bad ones.