what would be the point? it doesn't get into the muscle in most cases using a slin pin. you can pin the delts using a 1" dart no problem. you want the test to go into the muscle, not the fat tissue sourrounding it
if your lean enough a half inch slin pin will go into the muscle no probs. i did half a ml in each delt and no lump the next day or anything which would indicate the oil went into the muscle and not lay between fat and muscle.
Same with biceps and triceps. especially biceps dead easy to do and mostly pain free. it just takes a little longer to get the oil thru the slin pin. around a minute for half a ml. why make more scar tissue if you dont have to.