hey bros, i am on my third time around w/ A.S. i was wondering if some one can make sense out of this. i have found 3/4 in 22gauge in my shoulder seems to work best for me. i discovered it by accident. i ran out of pins and used my dogs 3/1 yearly shot pins. does this make sense. my arms are 19 ins. if it helps i am cycling fina. i started this on my last cycle. i tried going back to 1 and 1 1/2 but went and picked the 3/4 after a week.