I don't have a problem with primer drag. I don't have a sig p365 (known for primer drag). But I do have a Kahr CM9 which is smaller yet doesn't have primer drag.
Here's how I imagine it happens: after firing the barrel starts unlocking / dropping down while the firing pin or striker is still extended outward. The case stays in place because the extractor claw and the chamber walls hold the brass oriented facing forward and tight to the breech face. Then the striker has a chance to retract at some point while the case is extracted from the chamber. Then later the back of the casing hits the ejector and end of story.
So is this essentially "early unlocking"? The larger p365 XL doesn't exhibit primer drag. Did the extra weight of the slide delay cycling speed, or did they delay the unlocking process? How did they fix it?
Here's how I imagine it happens: after firing the barrel starts unlocking / dropping down while the firing pin or striker is still extended outward. The case stays in place because the extractor claw and the chamber walls hold the brass oriented facing forward and tight to the breech face. Then the striker has a chance to retract at some point while the case is extracted from the chamber. Then later the back of the casing hits the ejector and end of story.
So is this essentially "early unlocking"? The larger p365 XL doesn't exhibit primer drag. Did the extra weight of the slide delay cycling speed, or did they delay the unlocking process? How did they fix it?