Re: 300 Win Mag
If Rel 22 is so good, why isn't anyone trying Rel 25? For velocity, increasing the time under the pressure/time cure, will get you there and accuracy might be great.
With the heavier 180+ bullets it should be a crowd pleaser. I'm getting near 3000 fps with 180 grains @ upto (so far) 70 grains of Rel 25 in my 30-06 Ackley in a 26" SS Lilja barrel; Zero, zip, nada, pressure signs.