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Powder efficiency

ABSHUNTS

Well-known member
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[TD="class: post-content, width: 83%, bgcolor: #F9F9F9"]I have a Contender in 7mm TCU with a 10" bbl. To me, it seems like the best powder would be one that burns completely before the bullet leaves the barrel. So, can I get some ideas on which powder will be the best in a short barrel like mine. I will be using a 120 gr. bullet. To my way of thinking, it would be a lighter load of faster powder but, I'm not sure if that thinking is sound. I will be hunting deer and antelope with it so I need a load that will give top, or close to top velocity (and of course accuracy) in a 10" bbl. Thanks for any and all advise.


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freezer

Well-known member
I have an older Conteder manual. It shows: *most accurate

IMR 4227
max 22.5* 2320fps 75%
20.5 2120 68%
18.5 1910 61%

RL7
max 26.5 2430 88%
24.5 2250 81%
22.5 2060 75%

H322
max 28.5 2410 95%
26.5 2270 88%
24.5 2120 81%

RL12
max 31.0 2320 103%
29.0 2200 96%
27.0* 2080 90%
 
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ABSHUNTS

Well-known member
Thanks Freezer - I have some IMR3031 powder on hand and it looks like it might do well also. I think I will start there and see what it will do.
 


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