Was attempting to suggest a wary eye while developing loads. The chronograph is vitally important due to 'normal' pressure signs being invisible with such slight taper in the case. In a smooth chamber, there is no such thing as sticky bolt lift when pressures get up there.

Keeping the velocities this side of insane is why I suggested Varget - or perhaps RE#15 might do as well. Varget is slightly more stable in cold or warm climates.

I'm quite excited to see how it shoots and some load/ballitics reported. I'm thinking normal top-end or very close to top end 9.3x62 or moderate .375 Styer data would be useful as a starting point when using powders such as H4895 and Varget. I measured 9.3x62 factory Sako brass capacity as 78gr.