Dammit..my first drug use was injectin crushed spasmo proxyvon capsules into my femoral veins. I was just fourteen..Best shot! I used my right femoral for a regular 3 years n left one for a regular 2 n half years. Yu cud sumtimz hit arteries, but remember, they are pink in color, vey pink (fresh). jus pull back yur gun, press yur thump upon it n squirt rest for maximum 5 minutes. second try is a bit dangerous bcuz yur stuff will be mixed wit blood from artery n yu wudnt be able tu identify the pink color next time. so wen yu see blood filling yur gun, jus giv a soft finger knock on yur gun's butt..if its artery yu'll feel some burn...if its femoral..yu wont feel anythin. press down around 0.2 ml..n yu knw it's femoral..Enjoy the best kick. no vein gives yu more pleasure than Femoral. wen yu av finished with femoral, ask me...I've been using some other vein for almost a year now. But femoral is the best...dangerous but yu get used to playing with guns. but not very dangerous as the posts described here...Remember I was jus fourteen n i did it to myself regularly,,, lucky shooting