Chamber plug for my 8 X 57, can't find one? Foaming cleaner?

[hc18flyer]

I can't seem to find anyone who carries a 'Possum Hollow' chamber plug for my Mauser 8 X 57 and PH isn't returning my e-mail. I plan to use a foaming cleaner and would like to plug the chamber? What else can I use to seal it? I wondered about some type of rubber membrane over a foam earplug? Ideas?
Thanks, Flyer

[tbierley]

I have used a shell casing put into the chamber and close the bolt.

[Jack Stanley]

A wooden dowel rod with one end whittled down to fit the neck area . Leave the rod just a bit large so you can bump it in to make the final seal .

Jack

[skeettx]

Why won't this on work??
http://www.midwayusa.com/product/388342/possum-hollow-chamber-plug-6mm-remington-257-roberts-and-7x57mm-mauser-7mm-mauser

[Freischütz]

I use a cork inserted in the chamber

[DrtRacr09]

ACE Hardware stores have all sorts of cork and rubber plugs back in the drawers by the nuts and bolts.

[Mk42gunner]

Rubber o-ring around the neck of a cartridge?

Robert

[hc18flyer]

Why won't this on work??
http://www.midwayusa.com/product/388...ser-7mm-mauser (http://www.midwayusa.com/product/388342/possum-hollow-chamber-plug-6mm-remington-257-roberts-and-7x57mm-mauser-7mm-mauser)

*** Possum Hollow lists a different part number for 8 X 57. I am going to try the o-ring over a fired case. Thanks, Flyer

[funnyjim014]

Spent she'll works for me

[Blue2]

I like the Wipe Out product myself. It and probably its competition are sold with a red small straw that can be placed in the spray nozzle. Take a spent case from your rifle and drill (enlarge) the flash-hole in a deprimed case to allow the red straw to just enter the "modified" case. This will seal the chamber and direct the expanding foam up through the bore. And yes you may get a bit of a false copper indication from the spent case. Not really a big issue.