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22-250AI or 22-243 or what

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Unread 06-19-2008, 11:44 AM
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Join Date: Jul 2002
Posts: 2,855
Well if the 22 cal is what you want then i consider a 1-7 twist and shoot the 90gr Berger or the 90gr Sierra Match King , i know a guy in California thats shooting a 22BR with the 90gr Bergers for rabbits and priarie dogs to 1000yds , he has figured his BC for the Bergers launched at 2900-3000fps to be close to .520 and the SMK's to be right at .500 , I've shot the gun to 500yds and its a certainly a 1/2 moa gun probably a bit better once you get settled in to it.

I think that the bigger case could get you to 3300 maybe 3400 FPS , that would be kinda like shooting a 175gr SMK out of a 300RUM balisticaly
Si Vis Pacem Parabellum
Molon Labe
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Unread 06-19-2008, 12:53 PM
Platinum Member
Join Date: Jan 2007
Location: MS
Posts: 1,652
I would reccomend the 7 twist if your going to shoot the 90s, but a 8 twist spins up the 80s just fine at higher velocities.

I built a 22-6.5x47 lapua and love it. I shoot the 80s at around 3400 fps with great accuracy. The 80 bergers stay together just fine, but the 80 smks shoot better in my gun for some reason. It is about like a 220 swift with great brass.

If 308Nate is going to do your chamber work I will gladly loan you the reamer if 22-6.5x47 is the route you choose. My reamer was throated for the 90s but works great for the 80s and is no neck turn.

I usually take my retired match brass and neck it down using my redding bushing die. It stilll shoots great despite using old brass. I even shoot the same powder vv560 even though the load is reduced a bit.

I built mine as a sporter weight hunting gun and have a hunting load worked up using 70gr tsx that shoot very well.....and it should work well on local whitetails.

I scoped the throat in mine after 500 rounds and was surprised that it looked like new. I havent tried it in a match but suspect that it would shoot well at least for a while, but that is a lot of fire going down a itty bitty hole.

Good luck with the new build, let me know if you want me to send the reamer to Nate.
I admit that I know just enough to be dangerous.....but dangerous at ever extending distances.
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Unread 06-19-2008, 05:16 PM
Silver Member
Join Date: Aug 2007
Location: bismarck ND
Posts: 406
eddybo you bring up a great point.

it would be nice to have a use for my other brass. i bought 200 pieces and have weighed them out and am shooing 100 through my match sounds to me that this would be the best chamber for getting long life out of my throat. and since i already have the brass and i wouldnt need to fire form and AI. i will talk to nate to see what he wants to do about the reamer.
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Unread 06-19-2008, 06:42 PM
Platinum Member
Join Date: Dec 2001
Location: Long Island, New York
Posts: 2,419
I built a 22-243AI that had no problem getting 3,670 ft/sec with a 75gr A-Max (moly) bullet. With a max charge of RE22 I shot a confirmed group of .625" @ 600 yards. It was devastating on groundhogs out to 1,000 yds, which is the longest shot opportunity I had.

I've heard that most 22-243 (and varients) shoot the 90gr bullets accurately out of 8 twist barrels. I would not get a 7 twist unless I knew it was necessary.
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Unread 06-19-2008, 08:02 PM
Platinum Member
Join Date: Apr 2004
Location: Reno Nevada
Posts: 1,715
I have one of those Bad Boys 22-250AI

8" twist on a Mike rock 5R SS cut rifled BBL. I have under 500 rnds through it and have already been told I have significant throat erosion. That 22 BR all things considered looks interesting. My BBL is a fast BBL I can shoot 55 gr Nosler BT in front of 44grs of W-W 760 for 3,900+. In fact just last Saturday same load with 55 gr Bergers Match they clocked at 3,985 FPS. But one small problem they didn't make it to the 100 yard line. I'm wondering if Lothar Walthar BBLs will hold up better???????????????????????????
How does it profit a man if he gains the whole world but loses his soul?
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Unread 06-19-2008, 08:19 PM
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Join Date: Oct 2002
Location: York, Pa.
Posts: 611
220 Swift?!!!

I have a 27" barreled Swift 1-12 and it shoots the 69's very well (wish I had an 9 twist) had to slow them down to group well 3300 fps. The 8 twist will shoot the 75/80's well for you. Norma makes 220 Swift brass.
An ol' timer told me a 9 twist Swift with the 80's is just awesome, I'm sure the 8 would be no different. I run the Nosler BT 55's at 3950 w/N160 and the 69's w/RL-22
It is a great cartridge. Just gotta watch case length.
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