Re: 7mm rum and 168 berger vld
I've been shooting a 7mmRUM since before they were a factory offering, basically wildcatting the 300RUM. Primarily a 1,000 yard prone target gun (just shot out the second chamber), but I built one on an M700 CDL action to take to Africa in '08.
Both LOVE 5010 pulldown powder, each also likes Retumbo. I have some Vihtavouri powders on hand thanks to LEN, but have yet to wring them out. My target rifle shoots the Sierra 175s well, but shines with Cauterucio 176s and 156s. The hunting rig shoots 175 TSXs pretty well, but only at max velocity - 3,301fps. You need a 1:9" twist barrel or FASTER to stabilize this. When I backed off max, they yawed and tumbled at 200 yards. 160 gr Accubonds shoot very tight, but impact velocities at the muzzle may prevent their use in some conditions. I'll be trying Swift bullets soon - both 150 Scirrocos (love em in other rifles), but especially 175 A-Frames. I tried to talk Swift into making a heavier Scirocco in .284", but no dice......
Hope this helps !