H4831 has been slow in most of the loads Ive tried it in. I now have some H4831SC to play with, so that might sway me. IMR4831 has been god to me in the 270 and with heavies in the 06. Very similar to RL19 IME. I haven’t played with Hunter much, but also a similar burn rate.
H4895 is ok for reduced loads in the 270, not much luck with it in the 06. One placed it shined for me was the 35 Rem, very good accuracy and velocity. IMR 4895 is a gem, not a velocity champ, but accurate and predictable.
