If your going to BS the rifle, you can't go wrong with 4227 to start. In my 38 XL (actually 357 Max) LW, I use 14.0 gr 4227 and the 35875 (208 gr) Ideal bullet. For yours, I'd start at 14.0 and work up to 16 gr.

You'll need to slug your barrel to know what size diameter bullet you need. You may be able to use the RCBS 200 gr bullet mold, if it will fit your groove. If it's a modern barrel, your probably ok, if it's a orginal, it could have a larger groove.

Frank

It's a Darr barrel.

I'll start with targets. It came with a seater, so I'll try benching it. I appreciate your load suggestions. The barrel is pretty heavy (about a #5 I think) so I probably won't try it hunting. I enjoy working up loads. Thanks again.
Matt

I had a Darr .35-40. The best load was 16.5 grains of 4227 with a 255 grain Darr or Beveridge bullet. It also shot 16 grains pretty well but 16.5 seamed more consistent. Used the usual Rem. 2 1/2 primer.

Barry, How big are the base bands on those bullets?  Thanks, Bob

If you have any interest in shooting BP with it you might talk Steve Baldwin. Believe he is shooting a High Wall in 35-40. If you get on his website you might want to put 35-40? in the subject line as he said that he gets so many junk communications that he just erases the ones with 'uninteresting' subjects.

32-40