300 RUM - Nosler or Sierra Gameking

Discussion in 'Rifles, Bullets, Barrels & Ballistics' started by NotEnoughTriggerTime, Feb 5, 2004.

  1. NotEnoughTriggerTime

    NotEnoughTriggerTime Active Member

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    I'm looking to start reloading my 300 RUM, and am looking for a good bullet to start with. I'm shooing a Savage with a 26" barrel, with 1 in 10 twist.

    Planning on shooting groundhogs, and possibly whitetail deer (I know - waaay too much gun)

    I was looking at either starting with Sierra 168 gr Gamekings, or Nosler Ballistic tips, probably the 180 gr bullet.

    Are these good ones to start with, or should I start with something heavier - 200 gr range?
     
  2. COBrad

    COBrad Well-Known Member

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    I like to shoot the bullet weight that my barrel shoots best. My .300 Jarrett, similar to the .300 RUM, shoots 200 gr. bullets better than any other bullet weight I've tried. In my experience, at ranges under at least 200 yards even the 200 gr. SGK have blown up on every elk I've shot with them, and failed to exit. Lighter bullets seem to be even more explosive. You might want to try a more substantial bullet for ranges under 300 yards, for things you want to eat. Just my .02$
     
  3. Guest

    Guest Guest

    HELLO
    SKIP THE GAMEKING SKIP THE BT GO STRAIGHT TO THE 200 GR SMK BULLET. SHOOTS GREAT AND RIPPS THEM DEER A NEW A$$. MY SHOOTING TEAM AND I KILLED 2 WHITETAIL DOE AT 450 YARDS WITH A 300 RUM WITH THESE BULLETS TRAVELING 2925 AT THE MUZZLE A RIPPED A HOLE THE SIZE OF A GRAPE FRUIT IN THEM AT 450YARDS AND DROPPED THEM DEAD IN THERE TRACKS.
    JUST MY 3 CENTS
    ROCK ON.... ERIC 11 <BLOCKQUOTE><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><HR> <HR></BLOCKQUOTE>


    This is what lrwoodchuck meant to post under this topic, just wanted to make shure you seen this. I was part of the team and grape fruit is no exaggeration. [​IMG]
     
  4. Mark_in_utah

    Mark_in_utah Well-Known Member

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    Right now I'm looking at the results of testing a guy did on 180 grain .30 caliber bullets shot between 1400 and 3100 fps in deer. He shot up a LOT of road-kill deer on these test, and the results are surprising in many ways, but follow a lot of field experience people have had. He compiled data on over 1700 shots. He tested up to where the bullet basically loses all of its weight, and tested down to where the bullet stopped opening up. Besides showing the tabulated data, he also shos pictures of the bullets. Three bullets per type per velocity. The velocity was run in 100 fps steps.

    At 3100 fps a LOT of the bullets shed a LOT of their weight. Unless the bullet is of a partition or a bonded design, the bullet loses most all of it's weight.

    For instance, at 2600 fps the Matchking is down to 66 grains, it basically falls apart starting at 2400 or 2500 fps. Penetration was 17" It needs at least 2000 fps to reliably open up. It'd be fine hunting at long ranges, but don't expect a lot of penetration at close ranges with your cannon. The Nosler Partition held together up through 3100 fps, retaining 125 grains, and had 17" of penetration. At 2700 fps it weighed 129 grains and had 19.7" of penetration. The Nosler needs at least 1800 fps to open up. This supports the great reputation this "old standby" has.

    It appeareed that the overall winner for high-velocity weight retention and deep penetration was the Swift A-Frame which retained 167 grains. Not surprising based upon its reputation. Other good performers of commonly available bullets were the Barnes X, Nosler Partition, Remington Core-Lokt (gasp!), Trophy Bear Claw, and the Winchester Fail Safe. For lighter whitetails, exploding bullets and deep penetration are less of a concern.

    Mark in Utah
     
  5. Guest

    Guest Guest

    300-GTS THANKS
    THANKS FOR FIXING THAT SCREW UP. I GOT THE RAIL STOCK FOR THE 7-300 BRING IT DOWN SOME TIME, FOR SOME MEASUREMENTS. LATER ERIC [​IMG] [​IMG]
     
  6. NotEnoughTriggerTime

    NotEnoughTriggerTime Active Member

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    Just picked up some 200 gr Sierra Match Kings - on sale $18/box of 100!

    Next items - powder & primer....

    What do you guys use behind these darts of a bullet? They are pretty long!

    How deep do you set them in? In a factory loading there isn't that much bullet sticking out, as compared to whats got to be in the case. I suppose mag length dictates this.
     
  7. Boyd Heaton

    Boyd Heaton Well-Known Member

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    For Powder I would try h1000....Primers would be 215m's....Load them to 3.600....And go shooting.....
     
  8. Brian Rybicky

    Brian Rybicky Well-Known Member

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    Not,

    You might want to try some 125bt in that cannon when you go for chucks you'll get a heavy red mist [​IMG], you'll that the smk dont expand very well on them.
    Good shootin,
    Brian
     
  9. Boyd Heaton

    Boyd Heaton Well-Known Member

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    I have shot the 125's....4000fps is not out of the ?
     
  10. COBrad

    COBrad Well-Known Member

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    I use 78 gr. RL 22 in my .300 Jarrett with 200 gr MK. Fast and accurate. This is also a max load in my rifle, and I drop 3gr. when it's hot out.
     
  11. jrusso

    jrusso Member

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    I started using the 300 ultra mag this year and I am really happy with it. I killed a Dall Sheep in Alaska at 576 yds and a Whitetail in PA at 703 yds. I use 100gr of Retumbo 180 gr Nosler BT, Fed 215m primers, OAL 3.600. This load in my rifle is just shy of 3500fps., 26"HART barrel.
     
  12. sparksinner

    sparksinner New Member

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    Mark in Utah,

    The data you post sounds very interesting. Is there an online source for it? Or can you buy it anywhere? Please post some more info about how to get a look at the full experiment.

    thanks,
    gfp