pre load barrels??

[iagainsti]

Ethyl Oleate,(Oleic Acid Ethyl Ester)

it eats the rubber on the plunger. it takes a few days for it to happen.

http://en.wikipedia.org/wiki/Ethyl_oleate

Good to know. I have amps but run eod so at the most the gear is in the pin is for less then 48 hrs.