Just purchased a new Cimarron 73 short rifle in 44 spl. Would like to use IMR 4227 as I have two pounds on hand and also have 300 Missouri
200 grain FN coated bullets. Would like to shoot bullets at around 1300 fps to copy the original 44-40 loads. Anyone have any data that would state how much IMR4227 should be used to put me in the ball park of 1300 fps. Thanks

sounds fun, that rifle is on my short list

IMR-4227 is a great powder but you can not get 1,300fps out of a 73' with 73' "Group I" max loads.


Try this link for my load data tests.
https://drive.google.com/file/d/1L4CrfgL59_4nBSq-FzUgyMuCc_oylycZ/view?ths=true

44-40 History website: https://sites.google.com/view/44winchester

Thank you for your info. That's just what I was looking for.

Thank you for your info. That's just what I was looking for.