In the manual for the 630/631 they recommend dry firing a number of times to remove
factory grease before first use. I did not, but know that other manufacturers have
also recommended this, for wearing in the seal etc.
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.
