depends what ur injecting. winny, suspension, oil or water based, brand and how much ur putting in. Some will clog some will hurt like a mother.I've done quad shots, vastus lateralis. Used 23 guage, injected test prop, not a problem only 1 ml. I wouldn't have at 2 ml though. Anything over 1ml goes to the ass for me. Anyhew can't help u personally as I don't know ur application. Post ur gear, amount dosage and how many times per week, etc that will help us help u.
lol I just remember a post where a guy asked where the best place to inject was and he got one that said right in ur ass hole. Sick but funny.