With a Rem 405 gr JSP I’ve used 30.4 gr IMR 4198 for an accurate yet fairly mild load in my 1895G.
I’ve also done 34.1 gr IMR 4198 and a coated Acme 450 gr lead bullet. This packs a bit more of a wallop on the shoulder in the 1895CB.
For a 350 gr lead I have done 48.5 gr IMR 3031, not quite max in a Marlin but plenty enough for hunting.
A 300 gr JHP and 49.0 IMR 3130 will be very close to max and is a real thumper.
Always work up to any load on your gun from a safe starting point, my data was derived from Lymans 47th Reloading Handbook and Ive been using these loads for over 15 years.
Stay safe.