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Discussion Starter #1
Everyone is always talking about their 300 RUM's so now lets share some load data.

I'm still in development but currently shooting Hornady 208 gr A-max in front of 92 grains of Retumbo. Using Fed 215 Primers. Got some 210 Berger VLDS on order, so I will be doing more soon.
 

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I'm shooting 180gr Accubonds with Retumbo (don't recall the charge off the top of my head) with Fed 215s. I think it could be more accurate but I've been trying to find a load for my 260 lately and RUM is on the back burner. I shot my bear with it last year though and the bullet performed great.
 

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I use 180 Accubonds with about 86 grains of 7828.
 

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I have taken quite a range of animals with either some flavor of Barnes 168 or Nosler 168 Ballistic SilverTip. I use the Barnes when animal size dictates it which also negates accuracy requirements a bit. The Barnes 168 shoot in the .7-.9 range which is fine for large game. The Nosler 168 BST are my go to's for deer size or smaller and long distance. They shoot in the .4-.6 range.

Going forward if/when I start to get short on the Noslers I'm going to try the Barnes 130 TTSX for accuracy. Others have been using these very successfully at 3700fps on mule deer. Would be excellent on antelope, deer, sheep, and goat.

I use RL22 mostly but Retumbo (temp insensitive) for the arctic.
 

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I've been away from the computer and just saw the post. Thought I would add my 2 cents on the .300 RUM loads.

180 gr Scirocco-97.7 grs. Retumbo-3370 FPS. accurate but fouled barrel badly. I read this was a common problem and was fixed with the introduction of the Scirocco 2. I have not used the new bullet. Elk and Mule Deer.

165 gr Hornady InterBond-98.5 grs. Retumbo-3400 FPS Accurate and should be good for almost anything but then I wouldn't have anything to do. 2 Muleys and 2 Antelope.

200 gr AccuBond-92.7 gr Retumbo-3175 FPS. Nothing yet but this is the load that will go to Southern B.C. at the end of next month. Hope to use it on Moose, Mule Deer, Black Bear, and maybe a wolf.

All these loads shoot somewhere around an inch or less. Depends on the day and me. This works for me. I'll let you know how the 200's worked in BC.

Lou
 

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Discussion Starter #8
Just tried some new loads last night.

Berger 210 VLD w/ 91 gr Retumbo w/ Fed 215 Primer and Remington Brass. Shot 1.5" group at 200 yards in less then ideal conditions. (Breezy)
 

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I was given a box of Barnes 168 TSX bullets, I loaded them with 89 grains of RL22. Was getting good groups last week at 100 yards. Want to get back to the range soon and see what it looks like at 200 yards.
 

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I reload for two of them. And IMO the cartridge is plain awesome. My standard load is a Sierra 165 grain pill with more RL-25 than I care to put in print. I have heard good things about Retumbo but I bought 5# of RL-25. But at the load I am shooting that 5# will not last long.

I am also doing a little load work with the 200 grain Sierra bullet. But no spectacular results there yet.

The 165 Sierra is truly devastating on deer. But I do not know if I would try elk with them or not. That bullet is smoking, and I am not sure how it would hold up. I normally do not advocate controlled expansion bullets. But in a super performer like the 300 RUM I would probably start shooting them again.

I read above where a couple of guys were having good luck with RL22. I tried RL22, but pressure showed up pretty fast, and at only so-so velocities in both the Remington 700's we tried the powder in. Tom.
 

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I hate to say this cause i'm always talkin about my rum and how great but i've never loaded for it. i've got 5 boxs of 180 gr, cor-lokt shot and 1 box left plus 180gr, swift scirocco not opened. i shoot a few and mostly use it huntin just shoot to feel good with it. Guess i should get a set of dies and load some cause they are high price now .when i got gun they were about 40.00 now i think about 60.00 a box....later
 

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Discussion Starter #13
Some info from Berger regarding the 210 VLD.

RETUMBO is a good powder as is RE 25 and IMR 7828 SSC some load data below.
Load data was generated using Quick Load a 26 inch barrel a COAL (cartridge over all length) of 3.600 inches and your COAL and velocity could be a little different.
AS WITH ALL RELOADING APPROACH THE MAXIMUM LOADS WITH CAUTION AS ALL RIFLES AND RELOADING TECHNIQUES WILL BE DIFFERENT. If YOU CHANGE ANY OF YOUR COMPONENTS; THIS INCLUDES DIFFERENT POWDER LOT NUMBERS; YOU MUST REFIGURE YOUR LOADS BY STARTING WITH THE MINIMUM LOAD.
If we can be of any additional help feel free to contact us.
Thanks for your interest and have a great day.

Walt Berger
Berger Bullets
Technical Advisor

300 Rem Ultra Magnum
Bullet Powder Start Load Approximate Start Velocity Max Load Approximate Max Velocity Fill Ratio
210 Grain RETUMBO 85.5 2844 92.0 3035 99.2%
210 Grain RE-25 82.5 2843 88.6 3024 96.6%
210 Grain NORMA MRP 2 79.5 2676 88.2 2961 95.6%
210 Grain Ramshot Magnum 86.0 2835 90.8 2995 91.9%
210 Grain VIHT N170 87.5 2765 94.2 2984 101.6%
210 Grain H1000 85.3 2833 91.6 3038 96.5%
210 Grain H870 94.0 2880 100.6 3104 104.5%
210 Grain AA 8700 94.5 2650 105.0 3015 109.1%
210 Grain IMR 7828 SSC 80.5 2731 85.0 3022 89.7%
210 Grain RE-22 83.0 2982 87.0 3114 91.8%
210 Grain NORMA MRP 83.0 2976 86.8 3101 89.6%
210 Grain 50BMG 93.0 2730 98.0 2902 105.0%

210 Grain H4831 78.0 2774 82.0 2844 91.8%
 

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Discussion Starter #14
I thought I would share some more experience with the Berger VLD's. I found a load my 300 RUM really likes, 92 grains Retumbo behind a 210 Gr Berger VLD Hunting, with Fed 215 Primers.

Between my brother and I, we killed 3 elk this year. Two bulls and a cow.

My cow was dead on the first shot. Berger hit her hard, and put her in shock. I put 2 more in her but she was dead on number 1. (150-200 yards)

My bull was running around and after the first hit, stopped and stumbled. Put a couple more in him, but similar to the cow, I think he was in shock. (100 yards)
 
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