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A New Level of 410 Performance

Discussion in 'Shooting Related Threads' started by Shooting Coach, Sep 5, 2012.

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  1. Shooting Coach

    Shooting Coach Well-Known Member

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    I just loaded a batch of 410 ammo with Alliant's new 300MP powder.

    This powder can generate 1300 fps in Win and Remmie hulls with pressures around 10,000 PSI. Standard 1200 fps loads are in the light 12 ga pressure range. Loads were VERY consistent, and seemed to be cleaner than H110. No powder in the 410 will be clean like the 12 ga powders, but this is relative.

    Everyone who has loaded high speed 410's has burnt up a lot of cases. Lower pressures seem to extend life of this expensive brass.

    The powder is as good as they say it is. I shot my best score on our Subgauge course yesterday, and actually SMOKED TARGETS with SK/IC chokes in my 32" Sporter.

    This is now my go to powder for the Wienie Gun.

    My MEC bushing data is,

    12 15.7 gr

    12A 16.8 gr

    13 17.4 gr

    13A 18.1 gr

    Needless to say, this is not written in stone, my bushings, and my powder. Your bushings and a different lot of powder may vary some.

    Alliant has good loads for this new powder.
     
  2. wayneo

    wayneo Active Member

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    Thanks for the info Coach. Just looked at some data and might try some for .44 mag loads. I prefer W296 over H110, and looks like that 300MP might get me some higher velocities with a 240 grain Speer.

    Wayne
     
  3. Shooting Coach

    Shooting Coach Well-Known Member

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    I have loaded the 44 Mag since the late 50's. 300MP will give outrageous speeds in it, but for now, I am burning the remnants of H110 and Accurate #9 in the 44 and loading 300 in the Little Fellow.

    Accurate #9 is a great 410 powder, but full throttle loads develop around 1200 fps. H110 burns hulls in high speed loads, and takes up a lot of room in a case that has a very small boiler room.
     
  4. wayneo

    wayneo Active Member

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    Coach, I should have mentioned these loads I'll work up are hunting loads for a Ruger M77-44. Don't think I want to try any 300MP loads out of a handgun.

    Wayne
     
  5. claybrdr

    claybrdr Well-Known Member

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    Wayne, H110 IS 296. Its just packaged in a different can.
     
  6. Shooting Coach

    Shooting Coach Well-Known Member

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    The 77/44 is an extremely efficient rig. It can push a 250 gr Partition bullet at over 1700 fps. That makes it heavy woods big critter medicine. Power Factor is 425. The 308 with a 150 gr bullet at 2800 fps has a Power Factor of 420!

    If I had another one, I would put peep sights on it.

    Lot-to-lot differences aside, H110 IS 296. All Ball Powder made in America comes from the old Winchester Powder Plant in St Marks, FL. Now, the St Marks Powder Plant, owned by General Dynamics.

    The 300MP is made at St Marks.
     
  7. Shooting Coach

    Shooting Coach Well-Known Member

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    Wayne I HATE YOU! LOL

    After a little thought, I bought another 77/44. It will get a NECG Peep sight.
     
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