Originally Posted by
ruger357w
The older 45-70 trapdoors can't hold the pressure that modern day firearms can. So if you reload for it be careful and make sure you use the right data for it!
I am very aware they don't stand up to near the pressures of todays firearms. Thats why I am using Trail Boss. Its designed for reduced loads for older firearms. I have plenty of load data available from Hodgdon/IMR on the "cowboy loads". Mainly was just curious if anyone had used this powder in this same action/caliber combination and how the results were.