Eug, Very nice! Next time you are out after the wood pigeon with it how about some pics? Twenty rounds per minute is impressive, imaginary flying Zulu drill, that? I would think one would be melting their finger prints shortly. Is that with a loader and a composed pair?
BTW, thank you for the quick history. Can one buy the .577 based .45 cal Zulu cartridge any longer? Might be a fun combination for Buf today with solids. Just an idle thot, a friend recently took delivery of a .505 Gibbs bolt action made by CZ. 120 grains of some kinda powder over a 500 grain solid. Not for me, thank you!
Once had a BSA Cadet barreled and chambered for .22K Hornet w/Fecker target scope, a friend has it today. Have seen the small actions made by Greener, Westly Richards, BSA & Francotte. I'm sure there were others. The few large actioned shotguns I've seen always looked like they would kick like a mule, but I have never shot one.