Does anyone use Trailboss with the 220 gr Hornady flat tips in their H&H?

Looking for a recipe to use with a rifle being put together.

thanks.

It's really pretty simple to use. I've used it in 45-70, 43 Mauser and a few others.

http://www.hodgdon.com/PDF/Trail-Boss-data.pdf

I find it interesting that you would want to use Trail Boss in a 375 H&H.

I use it primarily in the 45 Long Colt with lead bullets and although it works great and I like it, it is a dirty powder. It doesn’t produce enough pressure to seal the mouth of your case to prevent blowback.

Your 375 is rated at 62366 psi MaxP. Trail Boss at a 100% case fill of 26-28 grains with a 220 grain bullet produces about half of that pressure. The recoil well be very mild but be prepared to clear your chamber and cases. It well have a little less punch than a 303 British.

It’s my understanding that it’s not a good idea to compress Trail Boss, spiking pressures is a problem. I haven’t tested the theory so I wouldn’t know for sure.

I have used Trail Boss mostly with Speer 235 gr SP in .375 H&H but have also tried it with the 220 gr Hornady. Both loads have been accurate (the Speer somewhat more so) and a pleasure in terms of lack of recoil. I have used this just as a practice load and have been very happy with it.

haven't used trailboss but 5744 works great with 220 gr bullet in the 375.

I had a chat with a rep from the ADI company who make trail boss. He said the fomual for working out a start load (with trail boss) is work out the volume of the case once you have seated the pill then start with 70% of that volume and work up from there.

ADI has started listing Trail boss loads for 308/3006 with 150gr pills which start off as Sub sonic loads