"No no, I never meant for it to be an open pool, but an enclosed tank around the gun." if you have a min of 15 tonnes of recoil trying to be mitigated in a sealed bath of water - that water will actually act like a solid - it won't give at all. you'll have substantial overpressure and blow the crap out of the container. also recoil behaves in 3 dimensions through the firing process.

felt

lift or rise

torque ie its just not a linear byproduct.

I always thought that lift or rise was simply an effect of the straight-back recoil acting above the pivot point. Plus you don't really see much in the way of torque mitigating devices - the structure of the support just sucks it up.

"I always thought that lift or rise was simply an effect of the straight-back recoil acting above the pivot point." I probably should have qualified the statement - "lift" is effected in a floating barrel or as you have said, creep above the pivot point. "Plus you don't really see much in the way of torque mitigating devices - the structure of the support just sucks it up." as above re qualification, its present in floating barrel designs.

Yimmy, apologies for a very late response to your question. Been a bit busy lately. However your question has been comprehensively answered by other in my absense. All I woul add is that in general with regard to recoil systems is that you want almost zero resistance to the recoil of the ordnance over teh first few inches of travel until the projectile exits the tube. This greatly mitigates phenomena know as tube jump and drastically reduces the peak load transfered through the weapn structure during the firing.