doublegunshop.com - home Forums General Discussion DoubleGun BBS @ doublegunshop.com Kerner-Anson design (modified A & D)

Looking at German Simpson s x s that has this action.I have been told it is a modified A & D boxlock. What are weakness and strengths of this German modification? Any information appreciated.

Axel E. on the subject:

"See the screw at the lower rear of the action body? This is the fulcrum of the original design Anson & Deeley sear. It is in the bottom of the action body and engages a detent in the tumbler from below, close to the tumbler fulcrum. During the 1920s the Suhl gunmakers almost universally adopted E.Kerner's modification of the A&D lockwork. Kerner relocated the sears to the top/rear of the action. They turn on a screw located at the top rear of the action and engage a detent on the top of the tumblers, removed as far as possible from the hammer fulcrum. This arrangement vastly improved the leverage. As much less mainspring pressure rested on the sear detent, Kerner's top sears allow lighter and at the same time safer trigger releases. Secondary safety sears are unnecessary with Kerner's sear arrangement. "

http://www.doublegunshop.com/forums/ubbt...true#Post233792

Kind Regards,

Raimey
rse

That screw, located where it is, sometimes leads people to believe that guns with that design have intercepting sears.

Here is some additional information posted on the German Gun Collector's Assoc. about the A&K action.
GGCA thread

From what what I have read, the design is a mechanical refinement (read improvement) of the A&D design. I suspect UK gunmakers might not agree.

Thanks to all that have answered question. I had thought the top screw was an intercepting sear on an traditional A & D action. Seems like a pretty good improvement and were the Germans the only gun makers to adopt this improvement? Any downside to this sear arrangement that anyone knows?