Have made a decision on the trigger guard. I had originally thought to use a SxS shotgun styled guard but will use the mauser bottom metal and cimply cut the mag box off it, continue the bow curve round to where it meets the base that will be under the stockwood and cut it square from there. It will require a little weld to fill what is left of the sling attachment hole but the anchor screw for the rear action screw will need filling anyway so not a big deal. I will fit a nut into the under channel so an anchor screw can be drilled down through the stock and locate to hold the front of the guard.
It will get a waist on the bow so that is another part decided on that will get attended to in the days to come.