Working up a new long range load

[petey]

7 RUM in Rem 700 LSS.

My old load of 91.5 grains of Retumbo shooting the old style of 160 grain Seirra Game Kings produced sub 1/4" groups at 100 and several one shot kills out past 750 yards on deer and a bit farther on groundhogs. I'm plum out of those bullets, so I snatched up some of those 180 grain Berger Match VLD's.

These have an awesome .684 BC and I'm expecting some good results. I'm starting at my sweet spot of 91.5 and have a bunch of loads running up to 93 grains. Hopefully I'm heading the right way.

This gun just shoots good. 150 grain Balistic tips at 95.5 grains of Retumbo produce just shy of 1/2" at 100, but I know it can do better with the right bullet. I have some Match Kings I plan on trying also, but I'm hoping those Bergers are worth the money.

Anyone have a good load for the 7 RUM using 180 grain Berger bullets? I'm not finding much data on anything higher than 168 grains. I'm sure I'll have my answer in a few days once I get to shooting them, but just wanted to know if I'm starting in the right place.