Advice on replicating precision hunter 143 eldx in creedmore.

J

Jim Byers

Member
My kimber Adirondack shoots this factory load amazing. 1/2 moa..
I finally got my bench all set up and I'm working on my first loads.. my powder is h4350.. any suggestions would be greatly appreciated.. I'm a rookie.
 
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My method, right, wrong, or indifferent is: If you have a factory round that is accurate, that is a VERY good starting point. You know the bullet you want to shoot. I also measure the OAL, of the factory round (to the ogive is better). You know the kind of brass that the factory is using. You have the suggestion of Winchester primer (that may vary, but a good starting point).
If you could chronograph the factory load would be best, but your ballistic program may be good enough. I would check loading data and see which powders will get you close to the factory. H4350 may, or may not be the best powder. I would start low, and work up with powder charges, checking accuracy and speed. As you know, most factories use their own powder, so you may not reach factory speeds. But, I bet you will be able to come up with a load that has the accuracy you want. A chronograph is a valuable tool in this process if you have one, or access to one! Good luck...keep us posted with your progress.
 
Thanks for the input.. I pulled a bullet from the factory load last evening... the powder appears to look just like h4350 to my eye.. 40.0 grains. I currently have federal primers on hand so I'll try a ladder with those first.. set my coal as best I could to the factory as well.. even weight sorted my brass and bullets.. surprised how much difference from one lot to the next.. on the brass as much as 7 grains.. hope to make it the range this weekend. I have a friend with a good chronograph so I'll be giving him a call..

Thanks again fellows.
 
Do they have the load on the box? When they were loading the 140 Amax they put the load on some of the boxes.
 
They quit doing that during the great powder shortage because they too could not get H4350..... seems they had to switch to HV 100 or similar which didn’t shoot quite as well so they stopped with the data. Anyway that’s what I read on Al Gores internet so it must be true.
 
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