7.5x55 grease/wax?

Spawn-Inc

Spawn-Inc

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So I'm not sure if I should post here or the Milburn section, so for now it shall be here.

I just bought a k31 and some surplus ammo for it and noticed the ammo has what looks like bullet lube on it. I assume it's a sealant but the bullets also have a fairly deep groove on them which makes me think it may be a form of lube.

Thoughts?
 
The waxy substance at the case mouth, if I remember correctly, acts as both a sealant and lube. GP11 is basically match grade ammo, too bad it is Berdan primed. You can keep it and covert it to accept boxer primers, there are some videos on this subject on YouTube. Diopter on this site will know more, as he is very knowledgeable on Swiss Rifles.
 
Good to know, I will keep all my brass and maybe get and rcbs pocket swager and do what this guy did. The good news is I get copper tubing free from work, think of all they money I will save!

[youtube]AkKJfvMyuDg&[/youtube]
 
"...rcbs pocket swager and do what this guy did..." It doesn't work. All the other so-called berdan to boxer conversion do not work either.
 
If you really like to play around and have nothing but time on your hands go ahead and do the work required to convert those primer pockets.

I've done it and to be honest, it's a lot of work.

I finally used the big head for a change, bought an RCBS Berdan Primer Decapping tool and stocked up several thousand Berdan primers of the correct size.

Once you get the hang of it, decapping the Berdan primed brass is almost as quick and easy as Boxer primed cases.

There is only one extra step to remove the primers and you have take out the depriming pin on your die set. I have a buddy that uses a special two prong decapping punch which he inserts into the case neck and turns until the pins enter the holes. He then uses a small hammer to tap them out. He has a base made from a 10cm square x1cm steel plate that he has welded to a piece of steel pipe, with a hole large enough to drop a shell head holder base into, which holds the base of the case while he punches it out.

That GP11 brass is excellent. Rumor has it that it's made by PRIVI for the Swiss.
 
bearhunter said:
If you really like to play around and have nothing but time on your hands go ahead and do the work required to convert those primer pockets.

I've done it and to be honest, it's a lot of work.

I finally used the big head for a change, bought an RCBS Berdan Primer Decapping tool and stocked up several thousand Berdan primers of the correct size.

Once you get the hang of it, decapping the Berdan primed brass is almost as quick and easy as Boxer primed cases.

There is only one extra step to remove the primers and you have take out the depriming pin on your die set. I have a buddy that uses a special two prong decapping punch which he inserts into the case neck and turns until the pins enter the holes. He then uses a small hammer to tap them out. He has a base made from a 10cm square x1cm steel plate that he has welded to a piece of steel pipe, with a hole large enough to drop a shell head holder base into, which holds the base of the case while he punches it out.

That GP11 brass is excellent. Rumor has it that it's made by PRIVI for the Swiss.
Click to expand...

hmm, i might just have to make a 2 pin depriming rod and see how it works on steel case ammo.

not worried about time as i find it fun, most of the time, messing around with things like this. i also don't shoot alot of rifle as i'm a member at a pistol only range. i also bought 40 rounds of privi reloadable ammo incase i get board of converting.
 
bearhunter said:
If you really like to play around and have nothing but time on your hands go ahead and do the work required to convert those primer pockets.

I've done it and to be honest, it's a lot of work.

I finally used the big head for a change, bought an RCBS Berdan Primer Decapping tool and stocked up several thousand Berdan primers of the correct size.

Once you get the hang of it, decapping the Berdan primed brass is almost as quick and easy as Boxer primed cases.

There is only one extra step to remove the primers and you have take out the depriming pin on your die set. I have a buddy that uses a special two prong decapping punch which he inserts into the case neck and turns until the pins enter the holes. He then uses a small hammer to tap them out. He has a base made from a 10cm square x1cm steel plate that he has welded to a piece of steel pipe, with a hole large enough to drop a shell head holder base into, which holds the base of the case while he punches it out.

That GP11 brass is excellent. Rumor has it that it's made by PRIVI for the Swiss.
Click to expand...

You can get away with using "just" the right size socket.
 
GP11 was made at a few factories in Switzerland.
Altdorf ="A" on headstamp, close down early 80's
Thun = "T" on headstamp , went on to become RUAG, now a division of RWS, Rotweil and Norma.
Dornach = "D" on headstamp, Closed in the 60's I believe.

What Prvi did do was the brass used by Portuguese Based FNM loaded 7.5x55 commercial load and then on to do 7.5x55 brass for Hornady and Graf's & Sons.
Most likely sold to European companies also in Germany and France for local markets.

Reloading GP11 with Berdan is not that bad at all with the RCBS Berdan tool.
 
Last edited:
diopter said:
GP11 was made at a few factories in Switzerland.
Altdorf ="A" on headstamp, close down early 80's
Thun = "T" on headstamp , went on to become RUAG, now a division of RWS, Rotweil and Norma.
Dornach = "D" on headstamp, Closed in the 60's I believe.

What Prvi did do was the brass used by Portuguese Based FNM loaded 7.5x55 commercial load and then on to do 7.5x55 brass for Hornady and Graf's & Sons.
Most likely sold to European companies also in Germany and France for local markets.

Reloading GP11 with Berdan is not that bad at all with the RCBS Berdan tool.
Click to expand...

thanks for the info, the ammo i got from lebaron when they had the k31's a few months back has an D and A.

like this,
....5
D......A
...79
 
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