tag:blogger.com,1999:blog-9038805453913133808.post4647097212962847524..comments2024-03-14T00:37:58.663-07:00Comments on Firearms History, Technology & Development: Actions: Blowback Action: Advanced Primer IgnitionThe Editorhttp://www.blogger.com/profile/16500376725481184982noreply@blogger.comBlogger3125tag:blogger.com,1999:blog-9038805453913133808.post-70722477379902793252015-09-14T14:35:56.938-07:002015-09-14T14:35:56.938-07:00why more time is taken by the bolt to move forward...why more time is taken by the bolt to move forward when firing first shot in advance primer ignition systemAnonymoushttps://www.blogger.com/profile/02436114109253541375noreply@blogger.comtag:blogger.com,1999:blog-9038805453913133808.post-45481278340197093242015-01-26T20:47:44.497-08:002015-01-26T20:47:44.497-08:00really excellent explanation, thank you for postin...really excellent explanation, thank you for posting this.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-9038805453913133808.post-70335287377536039902012-11-16T10:31:11.491-08:002012-11-16T10:31:11.491-08:00I suspect, in API SMGs (like STEN) the bolt is sti...I suspect, in API SMGs (like STEN) the bolt is still moving forward at the moment of ignition, but the case is fully seated in the chamber. I may be wrong, but I also suspect that the momentum absorbed by the case is divided in two parts:<br />1)when the bolt is crushing the primer, less than one milimeter from its most forward position, wich is very small;<br />2)after the bolt stops against the breech, some part of the bolt momentum is transfered to the weapon´s body and the whole weapon goes forward. At this moment, the bolt velocity is smaller (due to the shared momentum with the remaining weapon mass), but it is still going forward.<br />I may be wrong, I just suspect.Guntherhttps://www.blogger.com/profile/14158107185732215983noreply@blogger.com