Not sure why I never thought of it before but I have a friend with an identical rifle, I need to borrow his rifle and put some shots through it just to see if it cracks
Good Idea. There is a chance that your chamber is bigger than normal.
I'm a fan of the WSSM case and Win reloading brass for it, so this is interesting to me.
On the 223, I feel like they never should have made it. That they should have left the 243 & 223 to wildcatters, and began at 25wssm upward.
The brass is interesting in that they obviously made it from cut down WSM brass. This putting WSM body thickness in WSSM necks. Your 223wssm has the thickest necks of any cartridge ever put out, at around ~25thou. I guess it was cheaper to do that, and if they're running in a cheap mode then it makes sense that quality control would be lower. Perhaps the cartridge would be accepted as disposable.
I think it was their intent to run very high pressures, to win some perceived velocity battle in 22/24cal, while trashing super thick brass (sourced from WSM brass, possibly the worst of).
They might think that anyone drawn to super velocity cares about little else.
If I just took WSM cases, cut em down to WSSM length and formed 223WSSM cases, I would need to anneal the crap out of it for every single step in the forming.
I learned from forming and neck turning 26WSSM Imp. that there is nothing easy in working with brass so thick & hard.
There is always a price for everything, so it's advantage holds disadvantage.
There is also a balance for everything, and I think 223WSSM is a bad balance.
It's too much