I find this topic interesting. Some articles say that the first shot is less accurate than the rest of the mag. I think this has been established? The explaination is that the first shot is cycled by hand and therefore different than the gun's cycling which is more harsh if we can call it that. The advise is to sling shot the slide to get the slide to slam the 1st round in the closest manner to how the gun will do it. To me it seems the difference would not be different enough to effect the round's accuracy? I do see how the slide is not slamming back as it does by hand but the forward motion would seem to be very very similar. What's causing the difference that is significant enough to cause this accuracy difference?