Rebarrel to 220 swift?

[andym79]

Hi guys I want a 220 swift in single shot. What existing cartridge would be best to re-barrel to 220 swift.

The 220 swift has a .473" rim at the head, which is very common across a lot of cartridges, it does however have a much slimmer body than is typical of the .473 head cases.

In theory from my limited understanding an action set up for a .473 rim should work, so long as it is barrelled , the chamber cut and it is correctly head-spaced to use 220 swift.

.473 / 0.049 heads included 22-250, 250 Savage, 257 Roberts, 25-06, 270W and 30-06.

Am I barking up the wrong tree or could all of these be re-barreled to take a 220 swift?

I ask because I would like a 220 swift with a faster barrel than 1:14"

(obviously in a bolt action case length would be important)
THESE QUESTIONS RELATE ONLY TO SINGLE SHOT!

 

[Kp321]

You answered your own question. Any action set up for standard base cartridges will work for 220 Swift. I agree that a Swift will benefit with a faster twist but don't go overboard. I would not go faster than a 1-10 to limit the centrifugal force on the bullets.
While you are looking at new barrels, consider 22TTH (22-244). They are very popular in this area and work very well on small to medium game.

 

[witchhunter]

If you ream it to .220 Swift Ackley Improved, it solves the problem of standard .220 Swift brass flowing forward into the neck. Saves neck turning.

 

[andym79]

And I guess you can easily form 220 AI from just fire forming 220 swift brass!

Anyone know the difference between a 220 AI and a 220 Wilson Arrow?

 

[Jim Watson]

CotW says the Arrow is die formed for a longer neck and steeper shoulder angle.
A standard Swift will not chamber and cannot be fireformed from factory loads like an AI.

 

[andym79]

So which has the advantage the AI Swift or the Wilson arrow?

 

[witchhunter]

The AI can utilize factory .220 Swift cartridges. Just shoot factory loads and then you have fireformed AI brass to reload. my fireforming loads are accurate too. Win/win. In my opinion, the best improved that Mr. Ackley made, it is the most improved over the original.