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338 Sin

 
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  #78  
Old 02-12-2011, 03:13 PM
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Location: Watertown, SD
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Re: 338 Sin

First trial loads where fired today. With 91.7grs of retumbo I hit 2936fps with a 200gr bullet and no pressure signs. From what I see on reloaders nest I am getting pretty close to 338 rum performance. I am thinking about trying h1000 as it has a faster burn or maybe Ramshot magnum. W#hat do you guys think?
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  #79  
Old 02-12-2011, 06:59 PM
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Re: 338 Sin

Here is a pic of the rifle and snow shoes.

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  #80  
Old 02-12-2011, 08:35 PM
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Re: 338 Sin

If this is a mild load for the Retumbo, you may consider trying several larger charges and see what develops. You may also try some Reloader 22 or 25 if you have it.
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  #81  
Old 02-12-2011, 10:35 PM
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Re: 338 Sin

Quote:
Originally Posted by Firecat View Post
If this is a mild load for the Retumbo, you may consider trying several larger charges and see what develops. You may also try some Reloader 22 or 25 if you have it.
He mentioned to me that the load of Retumbo was compressed. That's why he was looking at a little quicker powder.
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  #82  
Old 02-13-2011, 03:03 PM
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Re: 338 Sin

I think you are to slow for a 200 grain bullet in that size case. I think you will be better with a rate range from 4350 to re-22. Magpro, 7828 might fit and I have something that would make the 200 shine which is WMR. H-1000 and re25 are to slow with the 200 grainers. Get with me on a pm. I would like to help you with it. I have quite a bit of experience guessing starting loads for new wildcats. I am confident I can get you over 3200 fps with the 200 grainers. My 338 RUM loads with the 200 grainers hit in the 3300's.
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  #83  
Old 02-13-2011, 03:22 PM
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Re: 338 Sin

I'm more curious what it's going to do with the 250's and 300's. When you had the reamer prints set up, how did you set the freebore and leade?
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  #84  
Old 02-13-2011, 05:32 PM
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Re: 338 Sin

I will be trying the 250gr SMK on my next loads. Here is the reamer print and LTranger I'll send you a pm. Thanks

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