well just about anything is possible bro, you can shoot prop through a 18 guage in your bceip also, but whether its advisable or not is questionable...same goes for your 29g 1/4 inch slin shots with prop, with small needle like that your definatley not getting into the bicep belly unless you got some 12 inch arms on you, in which case you shouldn't be juicing anyways (less your female, and even then prop isn't exactly your best choice)...and ive shot in my biceps with a 22, 23, and 25g and yes they all are quite discomortable, which leads to me not favoring or using bicep site injections very frequently...

Originally posted by King Samson
Ya, well guess what....I used a 29g slin needle for the prop in my last cycle. 100mg/ml QV prop .5ccs in each bi ED. Takes about a min. to get it in the syringe, but have you ever stuck a 25g in your bi. Hurts like a bitch. So yes, you can use a slin needle.