Stock, mine was really, really hard to get a pellet into the barrel. Took some 400grit sandpaper rolled into a gentle taper and worked on it a while until they went in with a moderate amount of thumb pressure. Have heard that many are like this so don't worry about opening it up a bit. Accuracy was not negatively affected, in fact it seems to shoot better with less force being applied to the skirt on loading.
JK's Airgun Forums, moderators, and administrators are not responsible for any problems that may occur from reading or using content posted on this forum, as they are the exclusive responsibility of two parties: the person who posted it and the person who acted on said posted information.Use of our forums by people under 18 years old is allowed only with legal guardian(s) present..