In my 25 years of collecting over 300 Arisaka rifles [ a few more than 3 ] I have seen it done many times with no problems .
A co-worker said something similar to me, once ... about drinking and driving.
He's dead now. Single vehicle roll-over, late at night. Truck ended up upside-down in a tree, with severe wounds to the man's head and neck. He bled out before he could be cut out of the truck.
It wasn't even his truck. He had borrowed it, because his car and keys were at another bar, from the night before.
Brings to mind common sayings:
"It's always in the last place you look." -- Yea, because you stop looking after that!
"I always get it on the last try." -- Yep. Because you stop trying after that!
And, notably, "I wouldn't be doing it, if it was a problem." -- Uh huh. Because once you do have a problem with a method, you stop doing it that way!
Respect the tool, or it will hurt you.
I've seen primers fail. I've seen cases fail. I've even seen catastrophic failure, first-hand (and grabbed one still-smoking, broken rifle from the shooter, so he could assess his physical condition while I looked over him for wounds to address).
Arbitrarily sticking ammunition into a rifle and firing it, just because it is "probably" correct, even though said rifles have a history of being converted to other chambers, is a game of Russian Roulette. You may win a few times - or even a hundred times. But you only have to lose
once for it to matter.