Interesting observations regarding the heavy Woodleigh's shooting much lower. The 310gr 35cal in a friend's 35Whelen and my 350RemMag are exactly the same, closer to 10" lower at 100m.

Nakihunter,
Regarding Rel-15, if pressures signs in your rifle indicate that its mild loads your using, try adding more and start compressing it. I've corresponded with two guys that found compressing Rel-15 kind of 'woke it up'. Hoping to try it out in my 350RemMag soon, likewise in the 458AccRel where I'm hoping a compressed charge will get me 2400fps with a 500gr Woodleigh.
Cheers...
Con