Fireforming 22CM from 22-250

[mbeavers1]

I have a 22-250 that will be getting rebarreled at some point to 22CM so I can shoot bigger pills. I have about 400 pieces of 1x fired 22-250 Lapua brass that will then be not needed. Has anyone fireformed this to 22CM? It seems it could be done but may not be worth it.

 

[Mr Flannel]

You can do it - but you’ll end up with a shorter neck. Can still shoot well but not ideal way to get 22CM case formed (others may think differently). Give it a try and see how you get on.

 

[mbeavers1]

Thats what I had read other places too. The other thing is that's 400brds down a hotrod barrel just to fireform. May be better to sell it and use the proceeds to buy proper brass.

 

[Codiekfx400]

The bullet will not know the difference between a 22-250 and a 22 Creedmoor. The one benefit of the Creedmoor is it will play nicer in a magazine. If you choose to fire form it you should be fine. I fire formed some 22-250 to 6 Creed and it worked but the neck was a little short.

 

[mbeavers1]

The bullet will not know the difference between a 22-250 and a 22 Creedmoor. The one benefit of the Creedmoor is it will play nicer in a magazine. If you choose to fire form it you should be fine. I fire formed some 22-250 to 6 Creed and it worked but the neck was a little short.

What issues would the shorter neck lead to? Increased or exaggerated concentricity numbers?

 

[Codiekfx400]

No issues other than possibly more carbon buildup in the throat area.