I have no experience with a trigger shoe on a rifle. I do know of two accidental discharges with trigger shoes on revolvers. It seems that a trigger shoe that is wider than the trigger guard can catch on a holster with disconcerting results. I know one guy in particular who has a scar on his calf from a bullet that penetrated his holster.

He who joyfully marches in rank and file has already earned my contempt. He has been given a large brain by mistake, since for him the spinal cord would suffice.

- Albert Einstein