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Reloading Techniques For Reloading


300 rum

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Old 11-07-2012, 09:22 AM
Silver Member
Join Date: Oct 2011
Posts: 155
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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Old 11-07-2012, 09:22 AM
Silver Member
Join Date: Apr 2008
Posts: 181
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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Old 11-07-2012, 09:27 AM
Junior Member
Join Date: Feb 2011
Posts: 21
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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Old 11-07-2012, 10:19 AM
Platinum Member
Join Date: May 2012
Location: N.D.
Posts: 2,875
Re: 300 rum

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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Old 11-07-2012, 10:31 AM
Gold Member
Join Date: Jan 2008
Location: NW Montana
Posts: 813
Re: 300 rum

Yeh I would use RL25 over H1000, H1000 is very inconsistent lot to lot.
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Old 11-07-2012, 10:29 PM
Junior Member
Join Date: Feb 2011
Posts: 21
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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Old 11-07-2012, 11:12 PM
Junior Member
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.

Aim small, Hit small
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