Testing out the Sterling .410 1/4 OZ slugs in the S&W Governor VS PMC Bronze .40 S&W 165 gr JHP. I do a 10% Clear Ballistics test with and without 1/4" MDF, chronograph the ammo and do 25 and 50 yard accuracy tests. Always appreciative of any channel help :) https://www.patreon.com/user?u=5828221