Tried a couple of loads for my .223 Steyr Pro Hunter Mountain using Vectan SP7 (cause I've got a lot of it). Got a 2cm 4 shot group at 100m which I was OK with. But then ended up with a 1cm group using Varget as follows:
25.5gn Varget
55gn Norma SP bullet
PPU cases
Winchester small rifle primers
56.7mm COL View attachment 24807
25.5gn Varget
55gn Norma SP bullet
PPU cases
Winchester small rifle primers
56.7mm COL View attachment 24807