Im thinking on buying a 20" .920 barrel for my stock 10 22.the barrel chanel will need to be opened up .I was thinking I would put a barrel pillar in the forend of the stock by drilling a hole and epoxing a threaded 10/24 brass screw in .it would be adjustable with a jam nut.my question is where would you locate this in the stock.4" ahead of the V block or in the tip of the stock.your thouhgts please.