I've injected most everything with a slin pin (pharma test, ugl, mast, tren, deca, eq, npp, .. all different brands , etc. etc..).. if the gauge is big enough, like 29g , the barrel being so small and thin actuality pressurizes better then a bigger barrel. so its quite easy . a 1 cc injection takes about 20 seconds.
the only compound I've not been able to use a slin pin with is Tren suspension . the needle gets clogged . everything else has always been easy breezy





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