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280 ackley big bullet data?

 
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  #1  
Old 02-13-2010, 03:21 PM
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280 ackley big bullet data?

Does anyone have load data on the 280 ackley with 190gr bullets? thinking around 50.0 grains of RL-22 to start. Hoping to get around 2700 fps out of a 28" barrel.
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  #2  
Old 02-13-2010, 04:01 PM
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Location: Eastern Wheat Field near Bennett, CO
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Re: 280 ackley big bullet data?

You should get more than that. The 280 AI is about the same as the 7mm SAUM, and I have one of those. Try Ramshot Magnum to get your velocities up there. Probably can usee 7mm SAUM load data as well. Start near the middle and work your way up in 1/2 grain steps.

Good Shooting
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Old 02-14-2010, 09:51 PM
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Re: 280 ackley big bullet data?

Quote:
Originally Posted by 338 LEGEND View Post
Does anyone have load data on the 280 ackley with 190gr bullets? thinking around 50.0 grains of RL-22 to start. Hoping to get around 2700 fps out of a 28" barrel.
You didn't say what bullet or barrel twist you are using, but you may have trouble stabilizing a 190 VLD in a std. .284 twist like a 91/2.......Rich
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Old 02-14-2010, 10:20 PM
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Re: 280 ackley big bullet data?

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Originally Posted by elkaholic View Post
You didn't say what bullet or barrel twist you are using, but you may have trouble stabilizing a 190 VLD in a std. .284 twist like a 91/2.......Rich

Its a 1-9 twist, shot them today. the 280 ackley had no problem stabilizing them, worked up to 53.5 gr rl-22. only had time to shoot at 100 yrds, that said the groups with 52.0 , 52.5, 53.0, 53.5 all shot oversized one hole groups. Plan to run them over the crony next time out, and a 600 yrd test.
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Old 02-14-2010, 11:36 PM
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Re: 280 ackley big bullet data?

Sweet man, sounds like you got a good one there. I'm thinkin my next rifle will be the plain jane .280rem.
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Old 02-15-2010, 11:06 AM
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Re: 280 ackley big bullet data?

Quote:
Originally Posted by 338 LEGEND View Post
Its a 1-9 twist, shot them today. the 280 ackley had no problem stabilizing them, worked up to 53.5 gr rl-22. only had time to shoot at 100 yrds, that said the groups with 52.0 , 52.5, 53.0, 53.5 all shot oversized one hole groups. Plan to run them over the crony next time out, and a 600 yrd test.
Sounds like you have it covered..Rich
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  #7  
Old 02-18-2010, 07:57 PM
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Re: 280 ackley big bullet data?

Ok run them thru the crony, 2835 fps with 6fps on dev. Set up at 400yrds, Five shot group was 2". I dont think im going to change anything.
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