>Mine likes retumbo 90 gr.
>Most factory barrels are shooting
>real well with 92 gr.
>
>>What powder and amount?
ABSOLUTELY do not follow this load for a 7mm Mag on the Berger or Accubond. Maybe a 7mm Rum.
Follow the loads listed in the chart above, they seem right for the Berger. I have two 7mmRM's and shoot Retumbo at 71.0 gr in one at ~3025 and R19 at 63.0 grains at 2875 in the other. These are what's accurate in each gun, with the latter being half moa to 700 yards.
I have killed two elk and two muley with the 168 bergers and 4 deer and 1 elk with the accubond. Bergers shred down about 80%, but ALWAYS penetrate including shoulders. Not one of these shot with the bergers has gone more than 10 yards, with most not taking 1 step. I prefer these bullets because I have worked very hard over 6 years to get comfortable to shoot now as far as 650 yards on game. I killed my deer at 575 with a lot of confidence. The better bc does help significantly, but only after 400 yards.
I also love the accubond, which is where I started. I also shoot a 25-06 and went from bergers back to accubonds with it as I did have two bad experiences with the bullets not expanding at all. Don't know if it was a bad lot of bullets or just the larger diameter allows for more reliable performance on the the bigger caliber. Anyway, my accubond kills, including the 25-06 and my son's .270 and .280 all seem to end up with 65% retention and the bullet laying against the hide on the opposite side even after passing both shoulders.
Again, both are great, if you shoot over 400 yards in the 7mm give the bergers a try. Start with H1000 and/or Retumbo and/or IMR7828 if you have it, with F215 primers about 2.0gr below max and work up from there. Play with the seating, starting with them kissing the lands. Watcht he pressure if you have a hot load and then try seating farther out. These bullets can be sensitive, but if you find the right combo, they work great.
Good luck.