Re: Long Range Build
I would stay away from the 7 RUM due to barrel wear. I'm shooting 162 A-max from my 7 SAUM at 3057 fps with H1000. I have a 28" Brux barrel with a 1-8.5 twist. I've grouped 4 rounds in 2.5" at 804 yds with good conditions. I love my 7 SAUM, but if I were you I would research the 7mm Practical. It's a 300 WM necked to 7mm and puts up some impressive velocities and accuracy. Here's some info on it.
ACTIVE DUTY MARINE CORPS '96-'04
SERGEANT (MED RET)
COMBAT ENGINEER, MOUT INSTRUCTOR, RIFLE/PISTOL INSTRUCTOR
"Be polite, be professional, but have a plan to kill everyone you meet."
"I come in peace. I didn't bring artillery. But I'm pleading with you, tears in my eyes: If you f*ck with me, I'll kill you all." Marine General Mattis
Custom built 7mm SAUM