Hudson PPSh41 ... Cartridge Rim Damage...

Post by Claymore

Refer to:-
https://mp40modelguns.forumotion.net/modelgun-videos-f2/hudson-s-ppsh-41-new-t1233.htm


... does it take chunks out of the rounds though as thats the problem with mine now, after about 5 firings the rims of the rounds have chunks missing and that causes ejection problems and i am still not absolutly certain what hits the round to casue that damage.

Post by Doc

claymore ..is it the force of the round hitting the ejector post that is knocking chunks from the rounds ??

If so then you need to increase the recoil spring pressure so the rounds hit the ejector at a slower rate ...
( or alter the rounds so they have a bit less back pressure )

DOC

Hiya Claymore,

The rims aren't that bad to be honest. I checked them knowing how much trouble you've been getting and although the rims are marked, there's no serious damage or chips missing etc.

I use MGC .38Super cartridges and I'm sure you'll remember the hassle I had getting them to fit into the mag'.
The rims are wider in diameter than the cart. body so 8ace turned them down accordingly. They slip into the mag and slide along the track easily now.
Maybe the rims are stronger now their diameters are reduced?

Doc,

What would you suggest is the best way to reduce back pressure in the cartridge please? Would using Hudson type drilled pistons be the way with this or are there other tricks?
_________________
Cerwyn

Hobby collector of Replica model guns and Militaria.
also member of Living History Reenactment Groups.

Post by Claymore

cheers Doc i will have a look at doing that, i have already filed the ejector post so that it is no longer pointed but the damage still occurs, i also have used 38 super rounds as the base is thicker than the normal ppsh rounds but even with a thicker base the rounds get mashed.