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300 Win Mag and Magpro

 
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Old 07-20-2011, 11:30 PM
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300 Win Mag and Magpro

I have been having such good luck with magpro in a number of my rifles I tried it in my Tikka 300 win mag today. I could not believe the results in a 24" barrel. I loaded 86.5 grains with a 180 grain hornady sst and a cci 250 primer. Three shots were all touching at 100 yards at 3230 fps with a five fps spread. I went up to 87.5 grains with no pressure signs and over 3250 fps but the best accuracy was the 86.5 grain load. I have some 180 grain cutting edge bullets with the listed .6 bc coming in this week. I am very excited about getting a .6 bc at 3230 fps out of a 24" barrel 300 winchester accurately.

Just thought I would throw this out there for you 300 win mag shooters.
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Old 07-21-2011, 09:35 AM
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Re: 300 Win Mag and Magpro

LT, How did you know where to start your charge weight with the MagPro? I can't find any data for it anywhere. Looks like you have a winner for sure. I can't get my load to break 3000 FPS out of a 24 inch barrel, let alone 3200 FPS
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Old 07-21-2011, 09:57 AM
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Re: 300 Win Mag and Magpro

Quote:
Originally Posted by Firecat View Post
LT, How did you know where to start your charge weight with the MagPro? I can't find any data for it anywhere. Looks like you have a winner for sure. I can't get my load to break 3000 FPS out of a 24 inch barrel, let alone 3200 FPS
email Doug Phair at AA Powder, and he'll send you data. They all seem to be a pretty good bunch over there. I'll see if I can't find his email adress in a few minutes
gary
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Old 07-21-2011, 10:02 AM
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Re: 300 Win Mag and Magpro

here you go:

Doug Phair is at Powder@midrivers.com
gary
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Old 07-21-2011, 11:25 AM
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Re: 300 Win Mag and Magpro

Thanks Tricky.
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Old 07-21-2011, 11:32 AM
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Re: 300 Win Mag and Magpro

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Originally Posted by Firecat View Post
Thanks Tricky.
Doug has a lady that works with him (or for him), and she's really ontop of her game!
gary
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Old 07-21-2011, 12:10 PM
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Re: 300 Win Mag and Magpro

I just work up my own loads using the powder burn rate. After a few rifles I have a good idea starting a new one. I have loads now with magpro for many cartridges and can just extrapolate and get it close. I load up five or so rounds starting with what I know to be a light load and go up until I hit pressure signs. Then I know my load range with that powder in that rifle. With the 300 winchester I went up to 87.5 grains with no pressure signs but hit that great load at 86.5 grains and staying with it.

My data after 40 years of building about everything anyone could imagine is far more extensive and realistically accurate than any loading manual.
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