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300 rum loads

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  #15  
Unread 05-27-2010, 09:19 PM
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Join Date: Feb 2010
Posts: 174
Re: 300 rum loads

I just bought today a Remington 700 Police in 300 RUM it is new with a 26" Heavy barrel and a HS Precision stock and will have a 50-bmg style brake. I shoot a secret receipe I got here in my 338 RUM and it's Retumbo, so a 300 Retumbo load would be great, I could bulk buy that powder.
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  •   #16  
    Unread 06-01-2010, 02:44 PM
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    Join Date: Jun 2009
    Posts: 7
    Re: 300 rum loads

    I hear really good things with Barnes TSX's (especially as hunting bullets) so I went and picked up a box of 200gr. I will be using H1000.
    Anybody have any results with these?
    Jimbo, I'm using the same rig as you. Let me know what you find.
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      #17  
    Unread 06-01-2010, 04:03 PM
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    Join Date: Dec 2009
    Location: Boise, Idaho
    Posts: 518
    Re: 300 rum loads

    Ok here is my results from Saturday, am going to try one more idea before I move out beyond 100 yards, but here are my results. Good luck
    Ok here is what I have come up with, bare in mind that I am still in load development and am still only shooting at 100 yards. The powders I have tried are as follows, Retumbo, H1000, Ramshot magnum, RE22, RE25. The bullets I have shot are berger 175gr, 185gr, 190gr and 210gr, also tried hornady 208gr A-Max. The 208 A-Maxes shoot great, but as I still have 3 brand new boxes of berger 210's, those are what I am going to shoot and my gun seems to really like them. I load them .020 off the lands, I installed a wyatt extended box magazine. The load data came from Walt at berger and have tweaked his data to suit my gun. The chrono I am using is the CED.
    210gr berger with 93gr of Retumbo,speeds were 2955fps-3023fps, quarter size groups. 5 shots groups.
    210gr berger with 94gr of Retumbo, speeds were 3048fps-3067fps. 5 shot groups.
    210gr berger with 92gr H1000, speeds were 3011fps-3031fps. 5 shot groups.
    210gr berger with 94gr H1000, speeds were 3093fps-3128fps. 5 shot groups.
    210gr berger with 95gr H1000, speeds were 3126fps-3146fps. 5 shot groups.
    210gr berger with 89gr RE22, speeds were 3095fps-3124fps. 5 shot groups.
    210gr berger with 89gr RE25, speeds were 2977fps-3008fps. 5 shot groups.
    210gr berger with 91gr RE25, speeds were 3048fps-3064fps. 5 shot groups.
    I felt the Ramshot magnum powder showed too high of pressure at the max load, but was not happy with the speeds. The gun I used is a Remington Sendero 300RUM, 26 inch barrel, 6-24x50 with 30mm tube Sightron S111 scope. I still want to get an after market trigger as I hate the stock X-Mark trigger. I am using federal 215 primers, remington cases, my measurments are from the base of the case to the Ogive-3.125"
    Good luck and hope my data helps you come up with a load that works for you.
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      #18  
    Unread 06-01-2010, 09:48 PM
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    Join Date: Feb 2010
    Posts: 174
    Re: 300 rum loads

    Freebird63, thanks for posting that data, man that is detailed and fantastic, Thanks
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      #19  
    Unread 06-02-2010, 08:10 AM
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    Join Date: Dec 2009
    Location: Boise, Idaho
    Posts: 518
    Re: 300 rum loads

    I will have some more data to post sometime later this week. Am trying a little experiment. I am so ready to start moving out to longer distances, just want to make sure the load I decide on is going to put the meat in the freezer and ring the gong at 1000 yards. I am halfway to buying my new trigger, once I get the new trigger my groups should get a little tighter. That trigger in my sendero is junk. I will keep you all posted with load details. Good shootin
    Chuck
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      #20  
    Unread 06-02-2010, 02:22 PM
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    Join Date: Oct 2009
    Posts: 36
    Re: 300 rum loads

    My favorite load for my 300 ultra is:
    92 grains of Retumbo
    Federal 215M primer
    210 Berger VLD loaded to the lands
    Nosler Brass
    Same hole groups at 100 yards. Velocity is 3200 fps but my barrel is 30 inches and this load is max in my rifle so be careful.
    Alan
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      #21  
    Unread 06-02-2010, 06:24 PM
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    Join Date: Apr 2010
    Location: OREGON
    Posts: 833
    Re: 300 rum loads

    Wow , how long did that ladder test take with the barrel heating up so quickly? I can only shoot mine for so long and the ADD kicks in from all the waiting on the barrel cooling. Oh and I load RL 25 87.5 g with 200 accubond seated .020 off the lands.
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