I'm getting ready to start putting together loads for my new 7mm RM. I picked up a box of the 175 SMKs and plan to start with RL-22. Any other powders you guys have had luck with when shooting this bullet? I've also got RL-25, but wondering if it might be too slow. Also, I don't see many guys shooting this bullet. Any particular reason? Should I be looking more closely at the lighter A-Max or Accubond?