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Post by chilipepper on Jan 26, 2009 22:16:05 GMT -5
Just wondering if anyone had tried running duplex out of their .22-250. I was trying to come up with some different powders to try. the overall goal is speed, my loads will be adjusted from there to achieve my accuracy. I'm hoping to get 4100-4200 out of a 50 grain V-max. any thoughts/comments would be great thanks.
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Post by rogerdailey on Jan 28, 2009 10:19:20 GMT -5
Just wondering if anyone had tried running duplex out of their .22-250. I was trying to come up with some different powders to try. the overall goal is speed, my loads will be adjusted from there to achieve my accuracy. I'm hoping to get 4100-4200 out of a 50 grain V-max. any thoughts/comments would be great thanks. I haven't tried it. I haven't seen any duplex load chat for the 22/250. It might be easier just to re-do into a 22 WSSM. Or one of the 308 case based 22 caliber rounds |
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lc
Forkhorn
Posts: 72
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Post by lc on Jan 28, 2009 11:32:29 GMT -5
Sounds dangerous. How do you keep the primer powder in place on the bottom of the cartridge unless it is a compressed load? Try a 22-284 same base size or as rogerdailey suggested 308 case.
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Post by Richard on Jan 30, 2009 21:52:14 GMT -5
Just run an Ackley improved reamer in and you will increase case capacity and should be able to achieve your speed goal. The Ackley 40* shoulder along with decreasing the cartridge taper will provide the capacity. I shoot a lot of Ackley improved cartridges. You simply fire a standard .22/250 case in the Ackley chamber and "presto" you now have a fireformed larger capacity case.
Richard
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Post by chilipepper on Feb 3, 2009 21:03:41 GMT -5
thanks for all the info, i think i'll try richards suggestion and go with the .22-250AI some time this spring. thanks again
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Post by KerryB on Feb 3, 2009 21:59:01 GMT -5
I would take Richards advice. I would also give SW a PM when you get a chance. If i am not mistaken he is shooting a new .22-250 AI custom built rifle and could probably give you some valuable tips concerning that round. I spoke with Steve this morning and mentioned your interest in the .22-250 AI and he would be happy to discuss this with you. I will PM you with his phone number so you can touch base with him!
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Post by dannoboone on Feb 3, 2009 22:20:02 GMT -5
A 40gr V-Max will get your speed. Or a 36gr Varmint Grenade will
get you past that.........neither with a very good BC, though. Duplex
should be left to tight fitting loads which cannot mix, like smashed
down to no powder shifting in the 10MLII. ;D
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Post by raf on Feb 4, 2009 12:17:25 GMT -5
I shoot a 40 grain V-max over H380. I'm getting just over 4000 FPS. I'm not sure how much faster you want to go. I know the gophers and coyotes don't like it  . |
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