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300 win mag load information

 
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  #1  
Old 05-27-2013, 11:40 PM
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300 win mag load information

I just got my 300 win mag from centershot rifles. Looking to push a 200 accubond. I have h1000, retumbo and h4831sc. Norma brass and fed match primers. Pulled data off Hodgdon's site but everyone seems to be well past their max.

My nosler reloading book doesn't have any data for H1000 or retumbo either. I am looking for good data on what folks are using on their 300 win mag that is 1/2 MOA or better please.

Thanks for he help!
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  #2  
Old 05-28-2013, 05:43 AM
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Re: 300 win mag load information

All three powders will give excellent performance. I use Norma brass and Fed 215 primers. Good starting loads with the 200gr NAB for these powders are: 71.5 gr. h4831SC, 73gr H1000, and 75 gr of Retumbo. COAL of 3.62". Work them up in .5gr increments.. My 26" barrel Rem 700 Milspec with 210VLD's, loaded .010" off the lands produces 2790FPS with 76.5gr of H1000 and 2880FPS with 79gr of Retumbo. I settled on Retumbo for my final load because of the high velocity and lowest ES. I did not optimize a load with H4831SC but the starting loads shot well. All of these powders produced .5MOA or better. Keep in mind that Norma brass has 3-5 gr higher case capacity than Winchester brass. Hope this helps.
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  #3  
Old 05-28-2013, 03:59 PM
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Re: 300 win mag load information



I Finally got mine shooting where I wanted with 77-grains of H1000, Fed215m, Win Brass. My 8-shot average was 3023 fps at 70-degrees and 6000'.

70.5 grains of H4831sc shot well too, but speed and accurracy are with H1000 in my rifle. I have a new Remington 700 Ti Alaskan showing up Thursday. For the money I hope it shoots as well as the Savage! Good luck and have best results with NAB's with jump or in 300WM at the 3.340 OAL. My 06 likes them short too or 3.250.
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Old 05-28-2013, 04:06 PM
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Re: 300 win mag load information

Quote:
Originally Posted by livtoohunt View Post
I Finally got mine shooting where I wanted with 77-grains of H1000, Fed215m, Win Brass. My 8-shot average was 3023 fps at 70-degrees and 6000'.

70.5 grains of H4831sc shot well too, but speed and accurracy are with H1000 in my rifle. I have a new Remington 700 Ti Alaskan showing up Thursday. For the money I hope it shoots as well as the Savage! Good luck and have best results with NAB's with jump or in 300WM at the 3.340 OAL. My 06 likes them short too or 3.250.
I assume that is a longer barrel you are shooting to get 3023 fps?
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  #5  
Old 05-28-2013, 04:27 PM
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Re: 300 win mag load information

Actually 23" barrel, 10-ft from muzzle, 12-shots total of each lot verified. I questioned the readings as well so we switched to another chrony for verification. The paper above has all the numbers.
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  #6  
Old 05-28-2013, 10:15 PM
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Re: 300 win mag load information

Thanks. Very helpful. I have the accubonds about .005 off lands.
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  #7  
Old 05-28-2013, 11:57 PM
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Re: 300 win mag load information

Quote:
Originally Posted by livtoohunt View Post
Actually 23" barrel, 10-ft from muzzle, 12-shots total of each lot verified. I questioned the readings as well so we switched to another chrony for verification. The paper above has all the numbers.
Have you verified it with drops at all shooting at a distance? That just seems really high for a 300WM, especially with a 23" barrel. I'm getting close to those velocities with a 300 RUM with 93gr of Retumbo and a 26" barrel.
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