Whats the dia. of a .310 bullet ?
Whats the dia. of a 30:06 ?
Do guys shoot 45-70 rounds from single shot 410's?
Yes, but it certainly isnt the smartest thing to try...
Curious, search you tube for the ones who try this.
Rob
You may be reading about cast projectiles
It is common practice to load a .310 sized bullets in a .308
No. Definitely jacketed bullets. I shoot cast and routinely oversize. But a cast bullet will swage down nicely. They were using Hornady .310 123 gr bullets.
Hundreds of guys on here do it. The extra pressure from that 0.002 inches is nothing compared to the increase you'd get from switching to a solid copper bullet.
Yep. 123 grain SST in a 308. Just make sure you've got the throat for it. I've got one rifle they won't feed in. Well, they will, but there's noticeable resistance, so no-go with that one.
What about risk of not having room for the case neck to expand? I may not be phrasing that correctly, but I tried a .310 in a piece of fired brass from my Garand. The inside case neck on the fired brass was definitely tighter than the .310 bullet.
That's.my concern. In a bolt gun no biggie. But in a Garand there may be risk of an out of battery firing if it doesn't chamber.
Will it plunk into the chamber ok though?
The fired brass chambers fine. I can't seat a bullet in a case to try as I have no 30-06 dies yet.
Got a vise, and a block of wood with a 1/8" hole in it?
Ed makes a good point though. It's certainly not what the Garand was "designed" for. There are cheaper, less iconic 308 bore rifles to monkey around with. That said, it's your property, and you can do as you please.
How cheap are you getting your pull downs? If your just plinking and want .308 diameter you could go with 110 gr?... $0.16 each is pretty reasonable... https://www.budgetshootersupply.ca/product/berrys-30m1-carbine-308-110gr-rn-bullet-100bag/



























