Well said!That really isn't the point. On line and in print there are several sources for three levels of load data for the 45-70 Gov't. This seems to be well know and accepted in the reloading community. Using lab tested data for my 1886 (modern) Winchester I am not trying to make a magnum out of it. I am simply using published data for loads not safe in a Trapdoor Springfield that are perfectly safe in my rifle.
The situation for the 44WCF is similar but not as well know or published. I had a Uberti 1873 Winchester for years in 44WCF before I read about John Kort's efforts to replicate Winchester H.V. ammo. I found the Lyman Group I and Group II data and was interested. I had a Group I rifle only. Fast forward a few years and I now have an 1892 Winchester in 44WCF and enjoy shooting Group II loads. Just as above, simply using published data for loads not safe in an 1873 Winchester that are perfectly safe in the 1892.
There are many loads, powders, cartridges that one source lists and two or three more do not. The high velocity or Group II loads are one of these subjects. That is how we wound up on this forum discussing the subject. You can call them +P, Group II, H.V........but magnum they are not.
If it has not been said in this particular thread then let me say it. Follow the published data from a reputable source.