Fillers work. I have a cast lead load for the 45-70 using the Gould 330 gr. hollow point bullet. Using a charge of IMR-4759, I fill the case to withing 1/8 inch of the neck, and seat the bullet. 2 inch groups are the norm with this load. Without the filler, the load shoots into 3 inches with almost 100 fps less veocity.
Paul B.
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