When you put air in there, the pressure inside increases and the air helps push the gear out (and go into your pin when you're drawing), the 1mL air takes the place of 1mL of gear. It will become harder and harder to draw over time (compared to the first time) if you don't push air into vials.ive actually never pushed air into anything...yet everything works fine...anyone got reasoning for this? just interested
Might work for someone with Ronnie-sized glutes. Couldn't imagine pinning that much into the glutes myself, ouch!I pinned 4ml into my glute once. NEVER will I do that again!!!
Might work for someone with Ronnie-sized glutes. Couldn't imagine pinning that much into the glutes myself, ouch!

I like that....lets call it the tri color pin!This may have accidentally ended up in my glute after a fall.....
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