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338-300RUM

 
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  #1  
Old 10-29-2006, 09:30 PM
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338-300RUM

I am just working up some varying loads for my new rifle in this caliber, has anyone else that has been shooting it got any recommendations for loads with 250 and 300 grain matchkings? any help would be greatly appreciated. The rifle is a Sendero SF-II with a new 30"Lilja barrel and a muzzle break. Timney trigger, and a Nightforce 3.5-15x50 scope with the NPR-2 reticle. Shooting great so far with the 250 grainer and Retumbo.
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  #2  
Old 10-29-2006, 09:41 PM
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Re: 338-300RUM

Sorry don't have any load advice. Actualy a new 338-300rum will be my next project when money becomes a little more available. I do have a few questions for ya though. Who did the machine work for you, and round about how much did he charge.
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Old 10-29-2006, 09:51 PM
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Re: 338-300RUM

Depending on oal and throat length 92-95 grains of H1000 with the 300 SMK will get you 2850 fps or so and has been wonderfully accurate. Good luck with your neww rifle.
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  #4  
Old 10-29-2006, 10:29 PM
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Re: 338-300RUM

Shawn,
As this round is your specialty, what is the shortest practical barrel length for this round for the 300 SMK? Is 26" too short to see any gain over the LM or regular 338 RUM?
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  #5  
Old 10-31-2006, 02:46 PM
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Re: 338-300RUM

The 338 Edge and the LM are for practicel purposes ballistic twins. The 338 RUM vs 338 Edge is different. Barrel length will depend largely on bullet selection. It has been my experience that with heavy bullets (300 gr) the Edge is and advantage no matter the barrel length. If you intend to shoot 225 NAB's the Edge chambering is a waste of time for a 26" tube if you want to run a 30" tube the Edge chambering is an advantage. If you are wanting to run a 26" tube and 225 NAB's just run a 338 RUM as its' performance is so close to the Edge in that platform that there is no reason to waste time on the Edge. That is just what I have seen.
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  #6  
Old 10-31-2006, 08:56 PM
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Re: 338-300RUM

Try 250g sierra sitting on 98g Re 25
250g sierra sitting on 102g H870

Start lower and work your way to these loads!!
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  #7  
Old 11-01-2006, 10:00 PM
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Re: 338-300RUM

Shawn, thank you for this load info. I just laid three into a .746" group at 300 yds with your lightest suggested load. Awesome.
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