10 gauge loading question
I am currently loading 1 1/4 oz Nice Shot 10 ga. loads in both Remington and Federal cases using Sherman Bells loads for 1 1/4 oz. Bismuth in these cases. According to his info they develop 5900 and 5800 psi respectively with roll crimps. My questions are what would happen to pressures if I used the 6 point crimp instead of the roll crimp and is there a difference in pressure between Nice Shot and Bismuth? Also what is pressure difference between lead, Bismuth and Nice Shot? Thanks for your input.
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