For those of you who do not believe me...
http://www.youtube.com/watch?v=_T_XQFzCyR8
This is a video provided to me by Ryan @ EliteAmmunition that shows the OOB firing with a primed empty case. The measurement reads 0.240inches I believe.
Okay, I don't believe the measurements.
I watched the four OOB videos and looked at the pics. NONE of the videos look to be as out of battery as the pictures. In fact, the closeup in this video
http://www.youtube.com/watch?v=jukArOoS2P0&feature=related shows that the distance is more like 1/8" of an inch, not 1/4.
I also could not tell what was being measured. Slide movement was being measured from the rear, but could not tell exactly what was being measured or how it differed from the zero point.
As far as the exactness of the measurement, 0.240" as stated, I am not sure that using one's grip to hold the slide open a given distance is reasonable or could be considered accurate. There is no way to believe that there wasn't a change from when the gun was fired to when it was measured, at at measurements of 1/100 of an inch precision. I also could not read the caliper in any of the vids.
I would have been much more impressed if he used an out of spec case in the chamber that held the chamber open (versus using his hand) and measured BEFORE the firing and that we could see a closeup of just how far open the slide was.
I liked the way the guy in the video scanned his left hand with the muzzle during second #7.
http://www.youtube.com/watch?v=o5oaOaiSmGs&feature=related
Loading 55 gr slugs for a Fiveseven is about like loading 305 gr .45-70 slugs into a .45 acp, if it could be done.
I really liked this comment from Accurate on the 5.7x28 cartridge and reloading...
1) This is an extremely sensitive caliber, please adhere closely to indicated loads and COL guidelines.
http://www.accuratepowder.com/data/5.7x28 FN vs Accurate only.pdf
Gee, I wonder why they would say that?