anyone shoot with a 20 gauge rifel barrel? what slugs do you use ive noticed the regular deer or hog holow point slugs by winchester and the remington sluggers neither will not hold a good group their all over the place. im thinking of going with salbot slugs for a better grouping. and what distance would you recommend i did 50 yards because i wasnt taking more than a 50 yard shot where i hunt anyways. should i sight in for 75 and call it a day if i get a good group.