anyone tried trail boss powder in .308 Win or 30-06 Springfield ammo with 115gr or 165gr cast bullets? If so, what are your recommended loads. Thanks. IMR/Hodgdon person I called for advice on load data was no help. Told they had done no work on loads for these calibers. They do show using 6.5 grains of Trail Boss with 160 grain cast bullet in 30-30 winchester, but IMR/Hodgdon person, for safety/liability reasons, would not comment on using the 30-30 Winchester Trail Boss data for a starting point.

Look at the IMR site again and read the intro for Trail Boss. It is designed for high density, LOW VELOCITY lead bullet cartridges so there will be data for many handgun loads and some rifle. For your purposes, you would do better with another choice of powder.

Thanks for your input Marshal. I also have H4895 and XMP5744 which I use with cast lead bullets. Have an IMR reloader's guide and read that because of its density, Trail Boss occupies from 50% to 100% of available case capacity, which eliminates accidently double charging a case. Because they showed loading data for the 30-30 win, thought it may have potential use in the 308/30-06. I also have a 43Sp Rolling Block which I reload for. I can use load data based on the 45-70 government for my 43 Spanish reloads, and IMR shows a Trail Boss load for the 45-70 Government.

I did have a reply on another site from someone who claimed to have used 13.1 grains of Trail Boss in his 30-06 with 170gr cast bullets. This load about fills the case up to the beginning of the shoulder (from rim) of a 30-06 case.

I'm just posed the 308win / 30-06 with Trail Boss question to gather info/comments from those that may have used it.