No experience with the 1-60/50 but a educated guess I would imagine you could get the shorter REAL to shoot ok in yours. The REALs come in two sizes for each caliber. A shorter and a longer one. Are you looking for paper accuracy or hunting? I shot the short one in my 45/ 1-66 twist. It shot good enough for a deer kill but not great, like it was on the edge of stabilizing. Seems like one in 3 would be a flyer but it wouldn't go completely off target. This was long ago before internet though and I have sense learned that it helps to use a over powder wad for accuracy. I no longer have that 45. They shot great in my 50 with a 1-48 twist and that was with the bigger one. My 54 also shot them real well but it has a 1-20 twist.