Originally Posted by Swellin
Since nobody cared to follow the link.....
23g 1.5 for glutes, 25g 1" for everything else. Draw with 21 or 22 and replace it with a fresh pin of a smaller diameter. The smaller the diameter, the less scar tissue you create. Unless you are injecting a suspension that requires a larger diameter pin, it is simply idiotic to use a pin of larger diameter than is necessary. Use whatever you like, but when you have to take a hammer to drive the thing through some scar tissue, you will understand why we say use a smaller pin.