I've worked up some loads with Benchmark for 155 Lapua Scenars but unfortunately have yet to find time to get to the range to try them out. I started out with 43.5 grains of Benchmark and worked my way up to 45.0 grains, in 0.5 grain increments. Once I try them out, I'll post my findings here.
03psd,
As for my other .308 load with Benchmark:
42.0 grains of Benchmark
168gn Sierra Match King HPBT-M (Moly coated)
Lapua Brass with headspace measurement of 1.631"
CCI-BR2 Primer
OAL = 2.800"
5-Shot Grouping: Consistent sub 0.5 MOA at 100 yards
My rifle:
Remy 700 XCR Tactical Long Range (26" barrel)
I've found that the Benchmark powder meters very well in my RCBS Uniflow Powder Measure. Since I'm still new to reloading, I still weigh each powder throw prior to dumping it into the case