don`t know on the rear sight but as for loose powder verse`s pellets. my preference is loose. have shot deer out to approx. 120yds. or so using pellets. but for serious fine tuning a load for your m/l., loose for me. as Pahoo stated more traditional shooters tend to stick with loose as it would be hard to get a 95grn. load out of pellets. experimenting with loads is half the fun
