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[Kurt]

Chris.

I have changed my loads over the years because of these darned snow bank shooting sessions over the years. If possible I would suggest every serious shooter to do this if possible. A balanced load is not just the amount of powder you stull in a cartridge case, it goes beyond that. A good balanced load, powder, compression, alloy, wads, primers bullet shape that works good in a .45-70 does not react the same in a .45-90 or larger calibers or smaller.
A soft cork or felt wad really has some different effects on how bullets obdurate. A alloy of 1/20 for the .45-70 might be good but using it in a .45-90 or larger really makes a mess out of the ogive.
A alloy with just a small amount of antimony added makes a very large amount of difference how the bullet reacts.
You can get by with changes better using a GG or groove diameter PP bullet then you can with a PP bullet patched at or minus to bore diameter.

Kurt