The problem with the 4227 choices is that in order to keep velocity down to around 1100 fps, you'll have to tolerate very low pressures resulting in about 65% of the charge being consumed. I think that will lead to significant inconsistency...but admittedly, I've never tried such a thing. I have no idea how 4759 would fare, but I suspect it wouldn't be much better.
Tin Star and Trail Boss would be what you need, IMO. It's a shame that you're not likely to find either anymore.
