222 rem to 223 rem
- Thread starter grizzly416
- Start date
kind of............but there is going to be a drawback that your not seeing right now.........
your 222 likely has a 14 twist and will only shoot up to a 53 grain bullet, likely even 55, that is also going to be the heaviest 223 bullet you can shoot. Look into a new barrel with a more adequate twist rate for a 223 Remington
your 222 likely has a 14 twist and will only shoot up to a 53 grain bullet, likely even 55, that is also going to be the heaviest 223 bullet you can shoot. Look into a new barrel with a more adequate twist rate for a 223 Remington
As long as you get the head space right, everything else is quite close.
The 222 shoulder is 3 thousandths bigger (diameter, SAAMI spec), while the 223 shoulder will be a few hundredths further forward. I'm not sure if the taper from the base to the shoulder will look after this little ring, or whether you'll wind up with a ring in the chamber that will make extraction harder. A groove 1.5 thousandths deep shouldn't be too bad, some lathes wobble more than that while running a reamer.
Like Yodave said, 1:14 twist is less than ideal, some .223 barrels are as fast as 1:7. It's not like your existing .222 barrel is going to sell for a fortune (wait: should we ask which brand of barrel/rifle you're doing this with, just in case?) and you can always try it to see what you wind up with. You can replace the barrel if it doesn't perform. Being limited to 55 grain bullets isn't so bad, that's quite close to the heavier end of 222 loads.
If it's an ordinary rifle and you don't want to reload, you might as well try it! Let us know how she shoots.
The 222 shoulder is 3 thousandths bigger (diameter, SAAMI spec), while the 223 shoulder will be a few hundredths further forward. I'm not sure if the taper from the base to the shoulder will look after this little ring, or whether you'll wind up with a ring in the chamber that will make extraction harder. A groove 1.5 thousandths deep shouldn't be too bad, some lathes wobble more than that while running a reamer.
Like Yodave said, 1:14 twist is less than ideal, some .223 barrels are as fast as 1:7. It's not like your existing .222 barrel is going to sell for a fortune (wait: should we ask which brand of barrel/rifle you're doing this with, just in case?) and you can always try it to see what you wind up with. You can replace the barrel if it doesn't perform. Being limited to 55 grain bullets isn't so bad, that's quite close to the heavier end of 222 loads.
If it's an ordinary rifle and you don't want to reload, you might as well try it! Let us know how she shoots.
I have two .222 barrels rechambered to .223.One will not shoot fmjbt without keyholing; fine with 55gr sporting. Bullet length must be right on the edge. This is not a conversion for 5.56x45 ammunition or any bullets heavier than loaded in .222.
Neither of my rifles shows a transition ring on the fired cases.
Neither of my rifles shows a transition ring on the fired cases.
At one point in living memory, 14 twist was what you got, as far as selection for a .22 centerfire barrel.
Wasn't until there was a move towards heavier and heavier bullets that the faster twists started showing up. Personally, I want the damn things moving out as fast as I like, and if I want to chuck more weight out there I will look for a larger bore. A bit old school, but...
As far as the conversion goes... Why? About all that is more available for a .223 than for a .222 is surplus bangin' away ammo. If reloading, no difference, once a stock of cases is on hand.
I'd look for a new barrel and keep the old one around too, Or sell it as-is, and buy the caliber you want, if putting a barrel on is too much money to spend.
Cheers
Trev
Wasn't until there was a move towards heavier and heavier bullets that the faster twists started showing up. Personally, I want the damn things moving out as fast as I like, and if I want to chuck more weight out there I will look for a larger bore. A bit old school, but...
As far as the conversion goes... Why? About all that is more available for a .223 than for a .222 is surplus bangin' away ammo. If reloading, no difference, once a stock of cases is on hand.
I'd look for a new barrel and keep the old one around too, Or sell it as-is, and buy the caliber you want, if putting a barrel on is too much money to spend.
Cheers
Trev
I have one, and found that a Sierra 60HP (a flat base bullet) will stabilize and shoot very accurately if I use two scoops of powder.
But, if you handload I suggest leaving it alone until you shoot the barrel out.
But, if you handload I suggest leaving it alone until you shoot the barrel out.
