I am working on a load for an old Winchester 1892 .44-40 I obtained last week, shown in the photo below. I would like to develop a load similar to Winchester's original High Velocity load (200 grain bullet at 1,565 fps). I'd rather use a powder a bit slower than 2400 just to keep the pressures down a bit and give a bit more even burning. I've been playing with XMP 5744. 19 grains gives me 1,220 fps and 20 grains gives me 1,320 fps. This second load is very close to an original load Winchester offered (1,300 fps) and will be my 'standard' load. It gives very low E.S.
Question: Does anyone have a load using XMP 5744 that will put a cast bullet out a 24" barrel at around 1,500 fps? I can work up, but I'd be curious to see what you already have.
Question #2: For those of you who are using Winchester brass (that's what I have on hand) at loads giving 1,500 fps or more, how long does your brass last?