22-250 ai

I shoot one with a 1-8 twist barrel. You are on the right track with the faster twist barrel, if you were just using a std 1-14 barrel there is not that much reason to go A.I. if it is just for improved performance in the field. When you go 22-250 A.I it will let you run some 75-90 grain bullets at around 3400 fps and will let you out preform most 243s out there. It is legal here for me to use my 22-250 on deer and it is a deer killing machine out to 400 yards with 80 grain bullets.
The other reason for going A.I. with a 22-250 is Brass life. I just got tired of trimming brass. After I went to the A.I. I trim once and that's is about it. It is almost worth going to the A.I. for that reason alone.
 
Hey north,

Do you run mags with your improved cartridge? If so, which ones? I really want to build this round as a mag fed tactical gun.

Thanks,

Kale
 
22-250ai

I run an ai, on a barnard sm action... I run it with a 1-14 twist, most people it seems want the fast twist heavy bullets, but my theory was not to "lob" a 75 -80 gr pill at 3400, how bout 52 gr bergers at 4075fps?.....

Thats why I went with the AI..... needed the extra capacity and also have had to not trim cases......

Brad
 
bradtothebone said:
I run an ai, on a barnard sm action... I run it with a 1-14 twist, most people it seems want the fast twist heavy bullets, but my theory was not to "lob" a 75 -80 gr pill at 3400, how bout 52 gr bergers at 4075fps?.....

Just a note at who is "lobbing what. A 80 Berger starting at 3400 shooting out to 400 yards against a 52 grain Berger starting at 4075,. The 80 grain gets there first, flatter (300yd zero) and is traveling faster carrying about double the ft lbs of energy. That's why I shoot the faster twist able to shoot the heavier higher BC bullets and we have not even talked wind drift yet
For closer shots well the difference just does not matter that much as it is with a an inch in most cases.

If you ever want to really reach out there with a 300 yard zero that 52 grain bullet drops over 53"s at 600 yards and hits with about 230 ft/lbs as compared to the 80 grain dropping 41"s packing almost 850 ft/lbs that's a foot less drop and 3 times the energy.
I have shot a fair number of coyotes out past 500 and few over 600 yards that is just not going to happen with a slower twist barrel, well at least not with out a lot of luck.

Only draw back is I don't use a mag with the longer bullets but if you are shooting long ranges you have time.
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you are indeed correct

with a 300 yrd zero, at 400 yards,it is flatter, but run a 100 yrd zero...then the 52 is flatter out to 400 by 2 inches. . I use mine for gophers and short range yotes, where I zero at 100 or 200 max. Different theory and different uses. The drop is pretty much the same at 500 yrds based on 100yrd zero. 52s are flatter to that range (500), ill agree upon energy you are most certainly correct, but up to 500 yrds, you can and i can both play with the numbers proving better drop, but both arent apples to apples.

To correspond with your use (deer etc), I use a .260AI with 140 range pills, that can reach out for the 5 or 600m range, has plenty of wind drift bucking abilitys, high bc pills, and has more than enough anchoring power.

There is no using a .22 here for deer, and we for sure have different uses for our rifles.... I prefer the higher speed@ shorter range for more spectacular gopher acrobatics. Hence why I also use a .204 for gophers also.....
 
albertacoyotecaller said:
I am also thinking I might be able to shoot some lighter stuff down to 50 grs with that twist still.

Greg
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You should have no trouble shooting lighter bullets with a fast twist you just have to be careful on what bullet you use. I run 36gr VG at 4200fps and have not had then blow up on me. I was using some 40gr bullets and sorry not sure what they were it was a few years back but they would not make to the target. The 36gr VG at that speed out of a 1-8 barrel just go poof if the touch anything, just red mist when you hit a gopher.
 
NORTH OF 53 said:
bradtothebone said:
I run an ai, on a barnard sm action... I run it with a 1-14 twist, most people it seems want the fast twist heavy bullets, but my theory was not to "lob" a 75 -80 gr pill at 3400, how bout 52 gr bergers at 4075fps?.....

Just a note at who is "lobbing what. A 80 Berger starting at 3400 shooting out to 400 yards against a 52 grain Berger starting at 4075,. The 80 grain gets there first, flatter (300yd zero) and is traveling faster carrying about double the ft lbs of energy. That's why I shoot the faster twist able to shoot the heavier higher BC bullets and we have not even talked wind drift yet
For closer shots well the difference just does not matter that much as it is with a an inch in most cases.

If you ever want to really reach out there with a 300 yard zero that 52 grain bullet drops over 53"s at 600 yards and hits with about 230 ft/lbs as compared to the 80 grain dropping 41"s packing almost 850 ft/lbs that's a foot less drop and 3 times the energy.
I have shot a fair number of coyotes out past 500 and few over 600 yards that is just not going to happen with a slower twist barrel, well at least not with out a lot of luck.

Only draw back is I don't use a mag with the longer bullets but if you are shooting long ranges you have time.
Click to expand...

X2 very well explained. for people think its speed that counts when its BCs that count. The fellows shooting at club I shoot at using 22-250 1/12 or 14 twists and 52 to 55gr bullets, just get whipped at 300 yards against the 223 Rems with 1/7 twists and 80 & 90gr bullets
Click to expand...
 
I've been thinking that a .22-250 AI w/ a 7.5 twist to shoot 80-90's would be a hell of a walking varminter. Not so good for sustained fire, but for those of use who spend more time on the glass, and on the hoof, than shooting, it could be fun as long as the barrel holds out.
 
50 gr vs. 90 gr

I too am thinking the AI version of the 22-250 is the way too go with a 7 twist barrel and the heavies, most likely 90 SMk's. Still wondering from others experience if these will mag feed from an accuracy intl. mag and if the improved version will result in significantly less case trimming than the original cartridge.

Looks to me to be a great varmint and tactical shooter. Wonder also what barrel life will be? 1500 rounds with a 90 gr at 3100 or so sound fair?
 
Forget about the 90gr SMK's. The BC isn't there, and they come apart at high velocity/rmp. The 90gr Bergers or Matrix on the other hand, are a whole different ballgame.
 
kaleh01 said:
I too am thinking the AI version of the 22-250 is the way too go with a 7 twist barrel and the heavies, most likely 90 SMk's. Still wondering from others experience if these will mag feed from an accuracy intl. mag and if the improved version will result in significantly less case trimming than the original cartridge.

Looks to me to be a great varmint and tactical shooter. Wonder also what barrel life will be? 1500 rounds with a 90 gr at 3100 or so sound fair?
Click to expand...

In a 10rds, they dont stack and the shoulder location is not where the guide rib is - further back. Not a big deal unless you seat way out and the noses get slammed on the front of the mag.

For a mag feed 22cal zapper, the ideal case would be a 22-243 like the Middlestead, Cheetah and Jaybirds of the 70's BUT without the sharp shoulder. Keep the standard taper and shoulder of the 308 case and live happily every after.

This is an itch I might just scratch.

Another interesting mag fed options would be a 22-6.5 Creedmoor, or a 22 - 6XC, or 22 - 6mm International, or 22-250 mildly improved. Anything with around 30deg shoulder and some case taper so they stack properly and feed smoothly.

I have played with enough 40deg shouldered wildcats to know, they don't feed as smooth as cases with less sharp shoulders. Tried a wide range of rifles and mags so there is no homerun here.

In case you are wondering what type of hitting power you have at 500m with a 90gr Berger BT or VLD from a 223 leaving at 2800fps

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Enjoy...

Jerry
 
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