300 ackley magnum, care to share your data?

[Oliveralan]

A good friend of mine recentely passed on a 300 ackley magnum with 30" barrel to me. I am having trouble finding load data. Anyone care to share theirs? I checked the hawksridge site and over 90% of the benchrest guys were using RL25, how temp stable is it? I travel and hunt a variety of climates and don't want excessive pressure/velocity swings. I have retumbo, H1000, and VV-N170 as well as 208 A-maxs, 210 VLDs and 190 VLDs on hand. Can get most any powder from the local shop however.

Thanks for any help,
Oliver