Jim and the lovely Elaine allowed me and IPS to try three of these sidelocks yesterday at Hesketh Gun Club. The guns are beautifully machined, the sidelocks needing no hand finishing but the jointing can still be finished best with smoke black and is. Jim says his own gun has shot buckets of cartridges, like 80,000. Because the ribs are cut from the guns, barrel weight can be left in where you want it. Stocks are obviously to order and for a sidelock secured by stock bolt is a good idea and interchangeable. The game guns weigh 7 lbs.
Do the billetted barrels recoil less? I pointed out they were pushing their luck giving me a low comb STRAIGHT HAND game gun and inviting me to fire 50gm 3" shells through it. I fed it 24gm Fblu, 36gm JK6 at 1080 bar and 40gm Gamebore woolly wads. Newtons laws are Newtons laws and the recoil has to go somewhere. The gun doesn't flip but recoils straight back.
Finally Jim handed me two 3" Express 50gm. Pushing off the auto safe I let a high teal go 50yds twice and it broke convincingly like you might expect from a cartridge with a double load and still counted my fingers.