I bought a tin of the mink oil patch lube track sells as all I ever hear was glowing reviews of better accuracy and many shots without swabbing ect ect ect . . Well I finally tried it yesterday in my shallow groove Dixie poor boy 50 cal flinter. When I normally shoot I use spit as the patch lube and can shoot tones of shots all afternoon and load the next one easily . My normal hunting lube was a mix of bees wax and a healthy dose of olive oil , I could normally get at least 3 shots before I had to swab . Well I loaded up the first shot with 80 gr 2f my normal patch material (ticking) and just fingerrubbed the mink goo onto it well . Loaded fine fired hit were I aimed all is good so far , tried to load the second shot the same way and was expecting all the best seated the ball with the short starter inserted ram rod and she wouldn't budge with only one hand on it grabbed it with both hands and nothing ! Gave it a couple short pokes maybe got another inch or tried again and ended up breaking the rod almost through my hand . Had to get my fiberglass range rodfromthecar and beat it in against a tree to seat it fully , one thing that was odd I've never experienced was that after i got the ball to the lower third of the barrel it seated a lot easier ? Don't know why ? Anyways I'm going back to my old BW and Olive oil mix for hunting . Anyone else use mink oil in shallow groove barrels ?