3rd I tried a Peregrine expanding monolithic of 286gr, still with S335 powder. The best results I achieved was with 54gr S335 (just over 2200f/s). Each barrel gave a very tight group (2 shots touching) and the groups were on the same horizontal plain, but too far apart. The action started to get a little sticky when I tried to open it, so I will not proceed any further (faster) with this bullet/powder combo.
