Most people beleive the 45-70 has plenty of bullet weight and hitting power but penertration can be little lacking .
All I meant was that if these bullets cause damage like an expanding bullet but improve the penertration it can only be a good thing .
I have not hand loaded for a 45-70 but have for a 444 marlin and a bullet like the HSP from Woodleigh would help this round to no end.
Cheers Neale.