5/8 seems a bit small dont you think? For glutes shouldnt it be 1" or just 1" all around? I heard 1 1/2 inch but im a skinny guy an that seems kinda unnecessary. Im pretty sure the last ones I used was an inch I can't remember tho
I draw with a 21g and switch to a 23g or 25g to pin with.
1" should be sufficient for most people. There are guys who like the 1 1/2" for glutes but I don't notice any difference myself.
Z track your injections and you shouldn't have to deal with leakage.
As a standard I agree with all the other posters: 18g to draw, 25g to pin, 1" length (1.5" for glute).
After a while and gaining a lot of experience, and depending on your BF%, you may choose other sizes/gauges.
For me I like to draw from the vial with a 20g needle (18g starts to chew up the stopper for me).
- inject with 23g (25g is too slow for me, it's oil after all).
- 1" needle for all injects over 1ml (including glutes for me)
- 5/8" for 1ml or less injects (excluding glutes)