Home Forums Reloading Big Game Rifles Pressure question

I normally load pretty conservatively but have worked up a load I consider about max based on velocity and pressure signs. It is:

270 Win
W-W Brass
WLR Primer
61.0 grains RL26
Barnes 129 LRX @ 3.265
Rifle is a SC Production M70, 22” Fwt barrel which yields about 3100 fps.

Due to the lack of published RL26 data, is there software available which will estimate the pressure of this load?