normally i mix my shots and do 2 - 3 cc at a time. so at that point its better to use a 3cc syringe instead of doing 3 separate shots with a slin pin correct? less scar tissue overall even though the needle is fatter right?
That's one way of looking at it.
But I look at it like this. With slins you can more or less inject anywhere. So you have so many more sites to choose from so your not injecting in the same spot all the time.
And the puny needles don't leave as much scar tissue as the bigger ones.