300 Ultra Mag Factory Load
Anyone know what powder Remington uses in their factory loads?
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most factories use what is known as "married powders" or "duplex" loads. They are a combiniation, derived from very extensive labratory testing, that produces a target pressure/velocity.
I will say that factory RUM loads are rather low, hence the claims by the naysayers that the RUM gains little over the belted mags, when in fact, a good handload will walk well beyond the factory stated data.
If you want to run 165-180gr pills, then look at RL22 and H4831sc. For 200gr loads, the H1000 and RL25 work well, and H1000, RL25 and in some rifles Retumbo are the 210-240gr powders.
why chase the game when the bullet can get em from here?....
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I was wanting to work up a load for the 200gr. accubonds. I like what Ive heard about these bullets so far. I have a supply of RL25, H870, and H1000. I have yet to try Retumbo or Accurate 8700. 0 -
I shot the 200gr matchking with H1000 for 600 and 1000yd matches and it was a great combination. My load was 88gr's but you will need to start lower and work up looking for best accuracy and watching for pressure signs.
why chase the game when the bullet can get em from here?....
Got Balistics?0
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