I have been offered a no 1 in 22.250, it was originally a 223. I would like to chamber it for a middlestead!!
If the original twist was a fast twist, would the velocity of the middlestead cause the bullets to disintegrate or would it strip the bullet as it travelled down the rifling? having read the reloading pages some bullets disintegrate at high velocities and this would be exacerbated by the fast twist.

many thanks
Griff

You need to determine the twist of the barrel to see if you're going to have any problems. However, I believe that most .223's have a 1:12 or 1:14 twist which would work well with 50 & 55 grain bullets from either cartridge.

A Ruger Mini-14 semi-auto .223 I checked has a 1:10 twist.

I have seen very light bullets, 40 grainers, come apart even when fired from a fast twist (1:8) .223 barrel at high velocity.

Griff,

Ruger no1 223s are currently 12 twist which wouldn't cause a problem with standard weight bullets 50-55gr from a 22-250.

Fast twists can be problematic 8-9 twist is necessary for 70gr plus VLDs. Anything less such as a 10 leaves you in no mans land unable to stabilise VLDs and tearing up 50/55s.

There is one standard bullet that will work in a fast twist 22 and - you're not going to like it - it's the Nosler 55gr ballistic tip which due to it's solid base is able to take the stress much better.

This is all second hand due to the fact that I was considering a fast twist (8.5)22-250 in a Ruger no 1 primarily for 70gr VLDs but able to cope with 55gr ballistic tips.

I would think a Middlestead on a 12 twist would be about right for 60gr Vmaxes or so.

If you want the full story speak to Norman Clarke at Rugby. He will tell you a standard weight barrel at 26" is too long for real accuracy. It all gets rather involved. Triggers on current no1s only go down to 3lbs safely or it's a Canjar (�250plus)

If you are interested I have the number of Lou Potter who specialises in Ruger No1s allthough he is unlikely to have a Middlestead reamer.

I think you should go ahead and try it.

1894
you really know how to make my day!
its that N word again!!!
If a 1-12 is standard for the no1 then it should be ok.
I know that I can get Clymer reamer but Was hoping that I could modify a 243 reamer?
Should it ever come about it certainly won't be having bt's down the tube!!!

many thanks

Griff