22-243

[swampratt]

22 CHetah is close.

The 30-06 extractor groove is much narrower than the .243 or .308 cases.
Take a look see.
When forming 45 acp shot shells from a rifle case the 30-06 narrow groove will not allow reliable extraction every time.

 

[Dumpstick]

Necking down a . 308 to 22-243 will probably require turning the neck, possibly more than once.

At least ream the inside. I would do both.

 

[Okie4570]

22-243 Middlestead has been around for a long time. The .220 Swift does the same thing, 22-243 isn't worth the trouble imo.

 

[swampratt]

The .243 to me is a little saddening as I do not get good case fill with the powder and I would assume the 22-243 would be even worse.

22 WSSM i know nothing about except the case necks on the WSSM line of cartridges are thick and do not like to be down loaded.
Necks will not seal up the chambers well when downloaded.

But ya probably did not buy a WSSM to make it go slow.

 

[7stw]

You certainly can but you’d want to neck size to 243 first. Then trim and turn the necks then go with 22-243. I learned playing with wildcats to go in steps. I made all my 6.5-06 from 30-06 lapua brass . 22-243 is an excellent round. And still have several 6creed that I made from 6.5 creed brass. And I did the same with my 22 creed thankfully Peterson and hornady started making proper headstamped brass.

 

[dennishoddy]

I'm seeing factory ammo coming out now. I subscribe to a couple of gun rags and have seen the advertisements.

 

[Clackamas Jack]

If you want to get spicy then 22-243 Ackley Improved in a 1-8 twist barrel.

 

[dennishoddy]

If you want to get spicy then 22-243 Ackley Improved in a 1-8 twist barrel.

What bullet?