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Load for 300 Rum w/210 Bergers

 
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  #1  
Old 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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Old 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  
Old 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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  #4  
Old 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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Old 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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Know the line has held, your job is done.
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Others have taken up where you fell, the line has held.
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  #6  
Old 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  
Old 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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