I personally never use them but we were at the ranch and grabbed a box of their coated 22lr rounds. Out of the brick he had 2 "smokers". Bullet sounded funky like it was a really slow moving. Then smoke just started rolling out around the hammer. Look like it barely combusted and the powder just burned off slow inside the chamber. I usually stick to my huge brick of remington stuff and sometimes some special cci rounds, but that scared me away from PMC.