Point taken...
I believe comparative results based on scientific analysis of the 444 caliber 1895 (results given...bolt thrust, psi)
444 = 44,000 psi
45-70 = 42,000 psi (up to 45,000 is still safe, but it IS the upper limit...no margin for error)
The difference in bolt thrust between 40,000 psi in the 45-70 and the standard 444 load is about 200 ft. lbs. (not enough to matter).
Nothing wrong with playing it safe...I'm just saying that the 1895 is built for it (40,000 psi), the hot factory loads (Garrett) are about 38,000 psi.
There is a lot of mixed up info on the subject...too much in fact. I'm not trying to sound like a "know it all" by any means...but I'm right on this one. 38,000 psi is just fine in a Marlin.