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new member |
Hi, Looking for new loads for my .300 Weatherby with 172gr Speer Impact other than the one supply by Speer, because the only powder I have from their data is with IMR-4831 and I have a lot of IMR-7828SSC and RL-22 and no data,that are very good for the .300. Anyone has tried other powders. | ||
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one of us |
If you can find data for 180gr use that. | |||
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new member |
Not this time,Anyway I will work up some loads with the powder I have but here is some data from Speer manual #14 I have compare to what they give for their new bullets: 180gr. Grand Slam or Hot core with Reloder 19, max= 78.0gr. 165gr. Grand Slam or Hot core with Reloder 19, max= 80.0gr. and for the 172gr. Impact with Reloder 19, max= 85.5gr. As you can see there is something different in the construction of their new bullet if you can go that high for the max load with that powder | |||
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one of us |
I had my best velocity with 7828 back in the day.. Ray Atkinson Atkinson Hunting Adventures 10 Ward Lane, Filer, Idaho, 83328 208-731-4120 rayatkinsonhunting@gmail.com | |||
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new member |
Me too I had best result with IMR7828SC with other bullets but not with the Intact bullets I could'nt get better than 4'' group. I will have to go with their data included in the box | |||
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