Powder for 300RUM?

MagnumManiac

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Feb 25, 2008
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G’day all,
Would like a recommendation on powder for my new RUM.
I have Retumbo, H1000 and RE25 in the appropriate burn rate. Also have H50BMG but little data out there.
I’m going to run 200g Accubonds for starters, seeing as though I have several hundred and I know they work well in cases like the Weatherby.
I’m thinking RE25 will probably be up there for accuracy. As it always seems to be in all my other rounds I use it in, but between H1000 and Retumbo, what do you all think will work best?

Cheers.
 

HuntnPack

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With a 200gr bullet I'd suggest going with H1000, Retumbo will work too but it's a fair but dirtier powder. H1000 is so easy to work with.
Agree….. H1000 is easy to work with.
I’m working up a load with 210’s & H1000.
I’ll post up after I test.
 

QuietTexan

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Of what you have, I would start with H1000 - I've used it before and it's easy to use. If you can find some when put behind 210 ABLRs I had good success with 7828 SSC
 

Dosh

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Running H1000 with the 210 Berger VLDH In the 300RUM. Retumbo wasn’t as accurate which worked out well since the Retumbo is what my 30/378 shoots quite accurately.
 

lancetkenyon

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I run H1000 w. 210s and 215s in my .300RUM @ 3100.

Retumbo for the 230s.

RL25 is too temp sensitive for me. Something like 2fps per 1° of temp swing. No thanks.
 

couesaddict

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When I shot 200 accubonds out of mine I played with all three of the powders you mentioned. As Lance stated RL-25 varied with temp a lot more than H-1000 or Retumbo. They all shot good out of it though. In mine, H-1000 pressured out around 100 fps slower than the other two but grouped the best.
 

MagnumManiac

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Hmmmm, it has not gone the way I anticipated. I was sure most would back Retumbo with 200g pills.
Luckily, I have plenty of both, so when I get dies and brass, I will test all 3.
I have never found RE25 to be temp sensitive at the temps I shoot in, so it has never been a consideration to not use it.

Cheers.
 

CONatureBoy

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I get over 3,000 fps with a Berger VLD H 210 grain using Reloder 33 in my 300 RUM (26" barrel). I used to use Reloder 25 and 26, with a little less velocity.
 

COmtnman1

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My nephew has a 300 RUM & he ended up using H1000 but he didn't have the other Hodgdon powders you mentioned. I have a 30-378 Wby Mag & I have both Retumbo & H50BMG. The H50 worked better for me. We did shoot different bullets than you're asking about tho, he shot Berger 230's & I shot Berger 210's. I also agree with the other comments about the RE25 temp sensitivity.
 
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