G'day
PLEASE NOTE THESE LOADS WERE WORKED UP IN MY RIFLE AND BRASS. PLEASE TAKE ALL NORMAL RELOADING PRECAUTIONS WHEN WORKING UP YOUR OWN LOADS.
I have used them a bit with Trail Boss, and AR2207 in my 1895 45/70 and they shoot OK, but my barrel is 0.4585 and these projectiles are 0.458, and as the name suggests they are HARD cast, they are not the best fit for my barrel, and so accuracy is not the best. For best accuracy I cast my own from pure wheel weight and they drop from my Ranch Dog 350-460 mold at 0.460/1 and I size them at 0.460. I also have a Lee 405 Hollow base mold that throws 0.461 and I shoot that unsized with Trail Boss with good accuracy, though that bullet is a round nose so single round loading with that one.
You could always try as Westcast if you can find them, they have a 350 flat point in 45/70, they are a gold colour, good for up to 1700 fps, and usually a bit cheaper that HB. Like the HB they are smaller and harder than I like but I did stumble across one load that seemed to work well.
Even If you did not hunt with them, they can be worked up to a similar load to your hunting load and are a much cheaper form of practice so you are really tuned in when THAT trophy is in you sights.
regards
Rich