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Reloading Berger Bullets

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300 rum

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  #8  
Unread 11-07-2012, 09:22 AM
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Join Date: Oct 2011
Posts: 521
Re: 300 rum

I moved up in .5 gr increments. I am shooting 91 gr H-1000 and a 215 Berger Hybrid. COAL is 3.843 so it is a single shot. Will shoot one ragged hole at 100 and 200 yds. Best ive done at 400 is 1.25". I would try the 215 Hybrid. It really was easy to load for in my rifle. Tried all different seating depths from 130 off to 8 thou off and they all shot at 1" or under at 100 yds.
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  •   #9  
    Unread 11-07-2012, 09:22 AM
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    Join Date: Apr 2008
    Posts: 190
    Re: 300 rum

    I shoot the 300 RUM using a load of 95.0 grains of Retumbo, CCI 250 primer Rem. brass full length sized and a 211 grain Bob Cauterucio custom bullet col is 3.679" which is maximum mag. length and I get 3150 fps along with .313" groups. I use Retumbo for the simple reason that it is not temp sensitive like the RL powders but you might wnat to try IMR 7828 & H1000 as well in your rifle. I hope that this info will help you .
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      #10  
    Unread 11-07-2012, 09:27 AM
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    Join Date: Feb 2011
    Posts: 25
    Re: 300 rum

    Thank you very much everybody! I will put all this info to work and hopefully get to the range tonight or tomorrow! I will keep you all informed as to how it all works for my gun!
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      #11  
    Unread 11-07-2012, 10:19 AM
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    Join Date: May 2012
    Posts: 4,108
    Re: 300 rum

    Quote:
    Originally Posted by raven1776 View Post
    When working up a load with a new powder what is the best increment to move, .1g, .2g, .5g?
    Thank you for all the info!!
    In a big case like this I move 2 grains at a time for the most part when working up loads. As to the rl being temp sensitive, I've seen hodgdon vary 100 fps with their extreme powders(h4895 in a 25wssm). Rl usually isn't any worse and is usually better.
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      #12  
    Unread 11-07-2012, 10:31 AM
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    Join Date: Jan 2008
    Location: NW Montana
    Posts: 904
    Re: 300 rum

    Yeh I would use RL25 over H1000, H1000 is very inconsistent lot to lot.
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      #13  
    Unread 11-07-2012, 10:29 PM
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    Join Date: Feb 2011
    Posts: 25
    Re: 300 rum

    Seen this in another post somewhere and it got me thinking, how important is it for each casing to weight close to the same for accuracy? If it really makes a difference, how big of a spread would you give each group of casings? I have 7 different weights of the same brand casings. There is about a grain between each group.
    Just wondering if it makes that big a difference.
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      #14  
    Unread 11-07-2012, 11:12 PM
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    Join Date: Jun 2012
    Location: Pagosa Srpings,CO
    Posts: 22
    Re: 300 rum

    Just tuned in, I have a pet load for my 300 rum sendero, Rem brass, Barnes TSX 180 gr,Fed 215 primers, 92.9 gr Retumbo, ragged one hole group. Start at 50 in lbs torque on bedding screws, and go from there. Have to check my notes for seating depth if your interested.


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