Just picked up a used Rotary Tumbler and it has the Pins included . I'm going to try it in the future , but I'm wondering about the Pin size . They are about 0.040 O.D. and about 0.263 Long . I will be doing mostly 223 Cases and wonder if these Pins are too long for the job . If so , what size Pins ( OD & Length ) will work best , and who Sells them ? Also what Liquid and how much Solution should I use ? TIA .