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Load for 300 Rum w/210 Bergers

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  #1  
Unread 10-26-2009, 01:36 AM
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Load for 300 Rum w/210 Bergers

I just ordered some Berger 210's for my 300 Rum. I will be using Rem brass, federal 215 primers and Retumbo powder.

I was wondering if any one could provide me a starting and ending point with his combo.

As far as I can tell a muzzle velocity around 3,000 should be doable.

Any info you can provide would be a GREAT help.

Thanks
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  •   #2  
    Unread 10-27-2009, 12:27 PM
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    Re: Load for 300 Rum w/210 Bergers

    If you will email berger they will email you back with their starting load and maximum load . That is what I did, I believe their start load for retumbo was 85.5 grains. Tonite I will get my load data out and post it tomorrow I use federal 215 match primers retumbo powder and the berger 210 hunting vld. I also ran my load through a chrony and I'll post it as well . What length barrel do you have ?

    Bigbuck
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      #3  
    Unread 10-27-2009, 12:59 PM
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    Re: Load for 300 Rum w/210 Bergers

    Bigbuck,

    Any info you can provide I would like to see, thanks.

    I have 26 inch factory barrel right now. Hope to swap it over to a 28 in Brux or Rock Creek a few years down the road. After my 338 is built.
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    "People sleep peaceably in their beds at night
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    to do violence on their behalf." -- George Orwell --

    Rest easy, sleep well my brothers.
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    Others have taken up where you fell, the line has held.
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      #4  
    Unread 10-27-2009, 04:09 PM
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    Re: Load for 300 Rum w/210 Bergers

    I just got back from the range shooting some 210 Bergers with 95 gr of Retumbo with an MV of 3200 plus (the low battery was also flashing) and no excessive pressure sings, This is a factory Sendero 26" barrel I got about .4 MOA to 212 yds. Going back tomorrow with some more to shoot at farther ranges and a new battery. Seated about .010 off the lands.

    95 gr is more than most will find as max. I've seen some posts saying about 93 grs. You should be safe starting at 87 or 88 IMO. You *should* be able to get 3100-3150 with the 210's and Retumbo, but every rifle is different.

    Mark
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      #5  
    Unread 10-27-2009, 06:34 PM
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    Re: Load for 300 Rum w/210 Bergers

    MontanaRifleman,

    Thanks for the info, its good to hear the 210's are working so well. Keep me up dated if you would, I'd like to hear how you do on your next outing. Feel free to send me an IM or email.

    Thanks again

    Cordell
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    to do violence on their behalf." -- George Orwell --

    Rest easy, sleep well my brothers.
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    Rest easy, sleep well.
    Others have taken up where you fell, the line has held.
    Peace, peace, and farewell... --Unknown--

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      #6  
    Unread 10-28-2009, 09:40 AM
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    Re: Load for 300 Rum w/210 Bergers

    94.7g and ~3040fps from 26" barrel.
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      #7  
    Unread 10-28-2009, 08:57 PM
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    Re: Load for 300 Rum w/210 Bergers

    Results from the range today...

    210 Bergers, 95 gr Retumbo, 1.5" @ 332 yds, 2.5" @ 427 yds, chrony velocites ran from 3140-3216, but I'm sure that was the chrony and not the actual ES of the loads.

    180 E-Tips, 97.5 gr Retumbo, 1.5" @ 332 yds, 1.9" @ 427 yds, velocities were all ovwer the place from 3100's to 3500+, again, the chrony and not the load.

    It seemed to change as the angle of the sun changed and really freaked out in the shade. I'm guessing the velociteis were about 3160-3170 for the Bergers and 3400+ for the E-Tips based on past performences.

    These groups were shot in about a 4-8 mostly head, slightly quartering wind.

    Mark
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