Combination of bad luck, stupid luck and loose nut on the trigger.The loose nut and his buddy were target shooting in his back pasture. The round traveled off his acreage, across & through the wooded & vacant 5-acre track behind his placecross the road, and 300 feet of my semi wooded acreage, hitting the Bay window. (Distance is 1300 feet)The spent round & jacket were found on my window seat.Sheriff report says no malice intended after interviewing him just a dumb ass, So, the guy said he'd pay damages, about $700.