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Post by outlander on Oct 21, 2010 11:50:05 GMT -5
What would be the maximum powder charge for a 50 cal 290 barnes TMZ of 4759 is still considered safe. I know that the charts for 300 grain bullets show 43 grs. as max but has anyone experimented with hotter loads??
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Post by realhunter on Oct 21, 2010 12:11:56 GMT -5
If you are using the newer stuff in the PLASTIC jug... I have been shooting 45 gr / mmp short black / 300 gr Hornady .452 XTP's
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Post by lwh723 on Oct 21, 2010 12:14:36 GMT -5
What would be the maximum powder charge for a 50 cal 290 barnes TMZ of 4759 is still considered safe. I know that the charts for 300 grain bullets show 43 grs. as max but has anyone experimented with hotter loads?? Not to jump on you, but I see a lot of people trying to push the limits with the book loads. I think this is counter productive. Book powders are quicker burning/faster pressure building pistol powders, so for best accuracy performance, typically, it's best to stay away from max loads (especially while the weather is still warm). I know that's what I did (went for the max) when I first got my 10MLII, and I know my results suffered for it. An extra 50-100FPS or whatever you'll get for a few more grains isn't really going to buy you much ballistically. If you're really looking for some max speed, H4198 and R7 would be a much better route to go. IMO. |
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Post by dans on Oct 21, 2010 12:39:20 GMT -5
The old 4759 in the metal cans produced 100 to 150 f/s more velocity than the current stuff in plastic jars. In order to get the velocity back to previous levels you have to use a little more powder. It all depends on Your rifle and what sabots you are using. Some combos tolerate a few grains more powder. Even the Savage manual says a couple grains either way may be necessary to get best accuracy. My accuracy came in at 45 grains and I am thinking that puts me about where the OLD powder was. You just have to shoot your rifle and see what it likes.
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Post by outlander on Oct 21, 2010 13:57:32 GMT -5
Generally the temps will be shot around + 8 C to - 25 C so cold weather is a big factor but I was just trying to get a feel what people are using for a Max load with the given powder. Anybody know how RL-7 will perform in cold temps???
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Post by mike3132 on Oct 21, 2010 15:22:23 GMT -5
46-47 grains should be safe. Mike
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Post by tdillinger on Oct 21, 2010 20:07:09 GMT -5
i have a plastic jug and 42 grs is premium for me, just ordered another 8lbs. I see no difference in velocity between metal or plastic. both shoot the same and yes i have both.
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Post by 10ga on Oct 22, 2010 10:39:13 GMT -5
Dittos for tdillinger! plastic jug 42 gr. and 300 gr. bullets best accuracy in my rifle.
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