Need/would appreciate some help with two things: 1. I have an area 30' x 18' x 12' x 42'.........how many square feet is that? 2. I have a Mauser that shoots 1 foot high at 100 yards. Since the rear sight is down as far as it can go, any idea how much wood to 'Dremel' off the stock to bring it down to where it shoots a little low (I can always shim the sight base when it's low)? Thanks all!