I just started the same thing in 7mm-08ai today. I’m loading for a kid so went real mild with IMR 4166. I’ll post what kinda results I get. I also have varget on hand but the 4166 is faster on the burn rate chart (pretty close to the same though). I’m starting at 38.0gr and going up from there to where I hit the first accuracy node. Again loading for an 8 year old who will not be shooting past 100 yards. So I’m more interested in a mild recoiling load than speed.