Burrard also did extensive testing on this using a large steel plate mounted on the side of a "Lorry".
Was Burrards gun barrel stationary ?
No; He had a long plate mounted with an aiming point marked & swung on it as an assistant drove it by at a measured distance & a fixed speed. He could not of course with this method get a fixed pattern & a moving one with the same shot, but did do extensive patterns on a fixed plate for comparsion to the moving ones, with same gun & load of course. I don't recall exact figures now, but his testing in comparsion also to other testing which has been done over the years showed that about 75% of the total shot was in about the front 40-50 % of the sring, with the badly deformed shot making up an extended tail. Consequently it does not follow that if a given load advertizes a 30% reduction in shot string, that this converts to 30% more pellet strikes on the target. Burrards testing was all done with shells using un-buffered, un-plated shot with card & felt wadding. He still found shot stringing to be of little concern within the 40/40 parameters, which accounts for the vast majority of shotgunning. It does of course make for Extremely Good Advertizing Hype.
