Tight Squeeze

[Why not?]

My dear friend Barry Palmer used 308 Norma Mag ammo in his 300 Win Mag one time. He either lost or couldn't find his 300 Win ammo, and I had plenty of 308 Norma. It was remarkably accurate, and killed almost as well as when fired in my 308 Norma Mag rifle.

The fired case necks were about an eighth of an inch long.

Ted

 

[Gatehouse]

Will a 7mm bullet slide in? Perhaps it was fired in a 280 Rem.

Ted

Forgot about this until I found the case again. 7mm bullet wouldn't fit. Definitely fired through a .270

 

[Boomer]

This is called fireforming and I do it all the time. Zero harmful effects to the rifle firing smaller bullets down a larger bore, after all they are still only guilding metal and lead. I have made several hundred 375 Ruger cases by firing 300 Win mag in a 375 Ruger chamber. I have also made hundreds of 30-06 firing loaded 270 from an 06 chamber, 7mm RM by firing 264 WM and on...and on... and on...

I knew eventually you'd find a use for a .270!

 

[horseman2]

here never was a decision on this one:



A few years earlier, two men were duplicating errors from the previous year. Bullets were key holing from a rifle they bought as a 7mm RM. When they asked for assistance, the exceedingly short necks on the fired rounds suggested a problem . . . the rifle was a 300 Win Mag.

 

[hometownhero]

300blackout in a 5.56x45 chamber.

This shooter was lucky. If that hadn’t been a bull barrel that thing would have split apart like a banana. Apparently the mag blew out and the firearm didn’t go unpunished.

I have to assume the cartridge chambered by driving the bullet deep into the case. That would certainly be possible with sub-sonic loads, which leave a lot of case space unused. That would also help prevent an even more catastrophic failure.

Still, pretty cool to see the bullet all stretched out like that.

 

[sikwhiskey]

^^^thats quite the bullet sizer. BC on the new bullet should be excellent lol.
Thanks for the excellent posts guys. Definitely not worried about that extra .001" head space anymore.... Sum people are born lucky.

 

[savagelh]

My ex father inlaw let a few 22lr go out of a 17hmr. I walked over when unheard something off.... Found it quick, I take some blame there as I had used a few hmr boxes for 22lr because I liked the packaging and didn't think it was ossicle to confuse the two... I was wrong. No damage done at all, but a gentle reminder.

I'm calling bs on this one. There is no way in hell he fired 22lr out of a 17hmr.

 

[Purple shoulder]

I'm calling bs on this one. There is no way in hell he fired 22lr out of a 17hmr.

I'm not sure. I just looked at some pictures of the two side by side. I can see how it could work. Do you think a 30-06 will fire in a 300 wm?

 

[bearkilr]

here never was a decision on this one:



A few years earlier, two men were duplicating errors from the previous year. Bullets were key holing from a rifle they bought as a 7mm RM. When they asked for assistance, the exceedingly short necks on the fired rounds suggested a problem . . . the rifle was a 300 Win Mag.

Looks more like a 300WM fired out of a 7mm?
I've shot 270 out of a 30-06 (not intentional) without much fanfare but zero accuracy, and witnessed a 30-30 out of a 7x57. The latter isn't recommended, it severely damaged the bolt and scope, and nearly blinded the shooter.