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Reloading / Re: Loads for .300 WBY with Speer Impact
« on: February 12, 2024, 04:25:16 PM »Compare the data in the boxes to their 180 grain load data.Find the powders you do have and see how much they are listing for the 180 grain.Reduce down 3 grains and then work your way up to max.
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.