Gents,
I'm wanting to build a new varmint gun mostly for prairie dogs, a yote or 2 and shooting steel. I've always wanted a .220 swift that that's what I'm thinking (I already have a 22-250 so drop it). I want something very flat and fast so I'm thinking 1-14" or 1-12" twist to shoot little bullets fast. I'm not planning on using turrets, just hold over. Most of the varmint shooting I do is 400 yds or closer. I'm a lefty so I'm looking for suggestions on an action (I want a SS Remington 700 but can't find a left hand). Also any reason I would need a different chambering or a long action?
Thanks,
If you get a .220 Swift, you will love it.
Good 53 - 55 grain bullets are available with BC's in the 0.290 to 0.310 range... (the same BC range as the 70 to 80 grain 6mm bullets).
Both the The 55gr Sierra BlitzKing is around 0.285, the 53gr Hornady V-Max is around 0.290, and the tipped Varmageddon is 0.310... the .220 Swift will drive these up around 3,900 to 4,000 fps.
In practical (real world) shooting, the .220 Swift will shoot faster and flatter than the 243 with varmint bullets.
You can build a left hand rifle on a standard length 700 action, and you can find a used LH 700 on Gunbroker for not to much money - just buy one that is not 223 or a belted magnum, cuz the .220 Swift uses a standard 30-06/308/etc bolt face.
Excellent brass is available for the Swift - Norma (the best), Winchester (second best) and Remington (pretty Okie Dokie).
I own a 40-XB in .220 Swift, two 22-250's (a 40-XB and a 700 VSF) , and two 6mm Remingtons (a 40-XB and a Browning B-78 HighWall) - so I have real experience with them.
... You will love the Swift.