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N530 under a 405 gr cast 45 70
Posted: Thu Feb 18, 2021 5:23 pm
by Stets
The data for this powder only goes up to 400 grains in 45 70. I have some 405 grains i want to load. Been slim pickens at the LGS and reloading supply place. I picked up the 530 because its good for 223 and 6.5 grendel.
Would the 400 grain loads be too light?
Re: N530 under a 405 gr cast 45 70
Posted: Thu Feb 18, 2021 5:56 pm
by Rifletom
Stets, I looked in 3 different manuals and came up empty with that powder[N530]. If you found/have a load with a 400gr cast, you should be fine.
I can't imagine 5 grains making a difference. Perhaps reduce the charge 2/10ths of a grain?
Re: N530 under a 405 gr cast 45 70
Posted: Thu Feb 18, 2021 8:20 pm
by Stets
Re: N530 under a 405 gr cast 45 70
Posted: Thu Feb 18, 2021 8:23 pm
by BigAl52
Just watch your brass but 5 grains in a bullet isnt going to make that much difference. Like Tom said back it down a half grain and give it a try.