I use pretty standard stuff in the 270,mostly H4831 and R22.

But a few years back I messed with RL25 and the 130 gr Barnes XLC in a M70 FW. The max listed load of 65 gr gave 3200 fps in a 22" barrel.

Laely I have seen that 62 gr 7828 with 130 NPT gives a shade over 3100 from another 22 inch barrel.



The 280 Remington is overbore.

The 7 Rem Mag is over bore.