Thanks to Eightbore and Der Ami for your interest on my request for info vis a vis my drilling restock.

I did try it on driven and flushed game birds (red jungle fowl in my case) and missed handsomely all the way through. Reverted to the pattern plate and actually it was the bottom edge of the pattern which was a foot high. I have been a national champion at skeet (hence skeeterbd) and have competed at the Asian level. I pride myself on shooting clay targets (international skeet) but fully accept this can mean zero on game. My other guns help me harvest game but this thing eventually required me to shoot 16 shots at the same repeatedly flushed bird before the poor thing was wounded badly enough for my dog to grab it (scrub jungle didn’t help the dog!). I kept feathering it and so pursued it until bagged.

Essentially, I believe (from reading about) that the underslung rifle barrel does make the shotgun barrels too stiff and they shoot high. The stock apparently needs to be configured to give enough flex to let the shotgun barrels shoot more on target. I am no expert on the physics or mechanics involved. One can always zero the rifle barrel later.

I would truly be grateful for the stock measurements of any Drillings you may have.

Thank you again for your interest.

All the best

Skeeterbd