Appreciate it guys. I was thinking ~20 gr or 2400 (and have a bunch). I do have the older manuals and remembered they have a lot of cast info. Sure I can get info there as well.
As for 4895 vs Unique and 2400 - I think I have plenty of all 3. So I have options. Also nice to know it is similar to the 444 Marlin. That helps (didn't think about that/knew 45-70 was much bigger, so go less).
And, as mentioned, yeah this one should make a great mild recoil popper for the corn crunchers! My intent. Plus, I like the SWC bullet vs RN for deer. I always shoot dead center shoulder, so it really doesn't matter for me. But if one of the kids or a friend shoots it with the RN and goes behind the shoulder, they end up dead, but they run - and in my woods that sucks! Had a friend shoot my 45-70 RN behind the shoulder. Thought he missed til we found a trickle of blood. I knew then that we had a dead deer, it was just how far we would have to try to track. I prefer bang/flop! Getting too old to drag them up out of the hollers solo!