A couple of questions to those who may be familiar
with the Schmidt Rubin Rifle, design of 1931, called the K31 Schmidt Rubin....(carbine model).
In the match grade 7.5 factory ammo, why is there a wax at the front of case neck & bullet? Its quite bulgy...is it a possible lubricant...or perhaps a
hydraulic seal of some sort? Someone who knows its history may know...any good Swiss out there?
The other refers to the steel jacketed bullets...after firing these beauties...there's no copper fouling of course...but is there any preferred way to clean the bore? I just get black residue...probably a bit of powder with some steel eroded off the jacket. Like a train with steel wheels & a steel track...I don't expect any residue to matter...but I just don't know (although most everything else, of course),
since I have virtually no experience firing steel jacketed bullets...any answers out there?
Jack, are you around? Thanks, Tom

you need to post your questions on the Swiss Forums. They know all about it. Elmer.

swiss rifles.

I, to was concerned about the wax sealer (water proffing, I believe) so I scrape it off with my finger nail prior to firing it.

"Steel jacket" ammo is very soft steel, softer by some reports than copper. The steel is plated to protect the bullet against corrosion. Much of the US WWII ammo is steel jacketed and won't hurt your gun barrel. As for cleaning, clean it the same as any other rifle. If you want to try something I hit on is use Outers or Gun Slick's foaming bore cleaner. Squirt it in the bore, let is set for an hour (they say 30 minutes, but I let it stay longer with no ill affects), then run a patch thru the bore. Powder residue and bullet jacket material come right out. It is truely fantastic cleaner and it has no smell.

SwissRifles.com is a real good spot to check out.
If one looks around they can find an original service manual for their rifle translated into English. It is a wealth of knowledge.

Controversy, somewhere during the late 70's or early 80's the Swiss quit using the wax ring on GP-11. There is/was after market devices to add the ring back, as many seem to favor it. Go figure. Lots of pro and cons, the one I like best is the idea that it may help lower the flame temp during the earlier/initial bullet travel in the chamber/leade,rifling area.
I don't know about softer than copper but the cupro-nickle(83-17)plated steel jacketed-lead cored GP-11 rounds with wax rings seems to have worked pretty good for the Swiss bores. The Swiss's rifle techniques are pretty simple. Clean(degrease), shoot, grease(while warm). Drink cold beer!!!

If I just gotta clean a bore, then Wipe-Out is working for me. Best-o-Luck

This is the best surplus ammo I have ever used. The combination of the K-31 and the GP11 ammo is incredibly accurate. Only the very best handloads can match it. I have not heard of anyone consistently beating it.

My K-31 has a micrometer rear sight. It shoots every bit as good as my match grade Garand in 308 with a Kreiger barrel. An amazing package for $80.

I have no idea about the wax ring. All I know is that it shoots like crazy the way they made it. I would leave it in place. I suspect it has something to do with the steel jacketed bullets and lubrication.