Newly Discovered Feature on Parker's?

[Dean Weber]

The set screws do not seem to have anything to do with some type of barrel to frame fit adjustment. It is a 2 piece setup.....like a plunger with a set screw behind it. This setup allows the plunger to move if the set screw is loosened a bit. Therefore, I definitely think it was to secure something in the chamber.

Chamber diameter measures close to .700, which is normal. Chamber is 2 3/4 which at first I felt was lengthened, but the forcing cone is only 5/8". Normally I have seen longer cones in chambers lengthened later. MBWT at end of chamber is .100 or better.

[Dean Weber]

Originally Posted by Jay Oliver

Can you turn the screws? This is a wild guess....but maybe to put some tension on the shells so when the action is open they don't fall out? You might have to set them differently for different brands of shells.

I recently saw on one of the bird hunting shows that CZ magnetizes their chambers now so shells don't fall out when the action is open.

Again just a guess...

This would be a cool feature when hunting out of a pit or layout blind. Always tough to break the gun without losing the shells when in the position.

[John Davis]

Here's a WAG. Looks to be an ejector gun. Perhaps you would tighten the screw if you didn't want a full ejection, therefor preventing the spent hull from hitting the ground.