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Post by outlander on Oct 20, 2010 15:25:48 GMT -5
;D I hunt until December in Canada and it sometimes hits minus 25 C and I was wondering what would be the best cold weather powder would be . I was looking at H4198 or RL-7
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Post by Deleted on Oct 20, 2010 15:32:03 GMT -5
I've shot H4198 down to zero with no problems. But at -25 I think I'd go with RL7. Some have experienced problems with H4198 at that temperature.
Zen
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Post by outlander on Oct 20, 2010 15:34:35 GMT -5
I am currently using SR4759 basic savage recommended load with the barnes 290 TMZ but I am looking for more power. Thanks for your input though.
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Post by rangeball on Oct 20, 2010 15:39:14 GMT -5
Have you considered a duplex of the 4759 under the H4198 to insure ignition?
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Post by outlander on Oct 20, 2010 15:46:22 GMT -5
how much of each and I guess thats a safe thing to do???. I load for a 50 cal and I am new to the frontstuffer thing but I love it. ;D
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Post by rangeball on Oct 20, 2010 15:57:46 GMT -5
I think youp50 did this because of cold weather issues with H4198. At the top of the forum there is a link to the load database, you can view it for tested duplex loads to get an idea of how much of each. If you go this route I'd also recommend you do a search for duplexing as there is a ton of info here about it.
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Post by mike3132 on Oct 20, 2010 16:13:22 GMT -5
Book loads of AA 5744 or IMR 4759 should do the trick in cold weather. 42-45 grains of either should go bang with 250 or 300 grain bullets. Make sure to use a mag primer like Fed 209A or CCI 209M. Mike
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Post by edge on Oct 20, 2010 16:26:08 GMT -5
If you switch to Fahrenheit it won't be as cold and other powders should work ;D ;D
Even at -13F, that is cold !!
Personally I might think about a 5744, N110 or 4759 load.
For more power a few grains of one of those powders would make an iffy load more dependable.....the problem is finding the sweet spot in warmer weather.
edge.
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Post by tar12 on Oct 20, 2010 16:48:25 GMT -5
5744 would be at the top of my list in those temps.
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Post by zakjak221 on Oct 20, 2010 16:50:14 GMT -5
I have used 5744 as well down to 10-20 degrees with no problems.
Very consistant powder.
Mark
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Post by youp50 on Oct 20, 2010 18:27:37 GMT -5
9/5(C)+32 Right?
9/5(-25)+32
-45+32= -13F
I dunno if God wanted us to use the metric system I am quite certain He would have given us 10 fingers.
I do not recall having problems at that temp using straight H 4198 CCI 209M primers and a tight fitting sabot with 300 grain bullets. It is getting close to the 20 below F where I did have to clean un-burnt powder from the Never Seize on the breech plug.
I drop a few grains of H4198 and add a few SC4759. I currently try to homogeneously blend the two powders. I think I will look at changing the way I do things. I am certain what I do works for me and I am equally certain there may be a better way.
Maybe a good cold winter and the tests can resume....
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Post by deadon on Oct 20, 2010 18:34:57 GMT -5
If you switch to Fahrenheit it won't be as cold and other powders should work ;D ;D Even at -13F, that is cold !! Personally I might think about a 5744, N110 or 4759 load. For more power a few grains of one of those powders would make an iffy load more dependable.....the problem is finding the sweet spot in warmer weather. edge. You made me laugh out loud, Rusty |
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Post by tdillinger on Oct 20, 2010 18:38:43 GMT -5
SR4759 and you can use a regular cci shotshell primer.
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Post by olegburn on Oct 21, 2010 7:55:01 GMT -5
;D youp50,God must loves me as I still have 10 fingers and I'm in construction since my youth. As far as metric vs. English-most precision industry runs in metric since loooong time ago. Now,let me pull my head in and let the mud fly.  on the original post: 5744 and 4759 go bang in 5 degree temp. every time in my gun. H4198 gave hangfires way too often. |
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Post by outlander on Oct 21, 2010 8:04:13 GMT -5
The best whitetail activity I've seen is when the weather is coldest so metric or sae I've gotta' be out in a stand. That being said it sounds like the basic load Iam using isn't bad ( 43 grs 4759) just not the most powerfull. Any thoughts on RL-7 I appreciate all the advice.
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Post by dans on Oct 21, 2010 8:43:31 GMT -5
A 290 TMZ and 43 grains of 4759 will kill anything on this continenet. If you want more velocity just boost up the 4759. I am shooting 45 grains and my friend is shooting 46. I believe others on this board have gone higher. The 290 TMZ comes with a tough sabot and can take some pressure. So if the accuracy is there, and I would be willing to give up a little accuracy for more power, you should be able to shoot more powder.
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