Surplus 7.62x54 problems.

SA85M1 said:
Hmmm..good info..btw how does this ammo shoot in your mosin ?Just got some to try out..
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My M38 absolutely loves it. Shoots very well for surplus out to 300 meters in a bone stock rifle. At least one fireball per magazine and just a slight whisper of cratering on the primer, so it's a tad warm but not unreasonably so. I wouldn't hesitate to buy it again.

OP - puzzling issue. At this point I'd just like, fire a few magazines of non-corrosive out of it, clean as normal and then oil the bajeezus out of it.
 
purple said:
Dave, if you have tried 10 percent of the advice in this thread you should not be having a re-occurrence of rust in your bore. As a minimum, if you do the hot water cleaning routine, followed by patching the bore dry and then using an oily patch after drying, you will not have a rusty bore. What does an oily patch look like after you have put it thru the bore 10-12 times? Maybe you could post a pic of an oily patch after swabbing the bore. About the only thing that hasn't been suggested here is to use Kroil, a fine penetrating oil, which will ooze into every crack in the bore and dislodge rust. It is so viscous that it will even get underneath metal jacket fouling and help to dislodge it. Maybe you could also post a close-up pic of the muzzle. Traces of copper jacket fouling in the bore can be mistaken for rust.

I'm not trying to tell you how to suck eggs here(maybe a bit though), but I and others are intrigued by this unique sounding problem.
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I followed every "known" procedure before,during and after shooting. I have never had this problem with corrosive ammo before. The last time I cleaned it I was using bore solvent and a .45 copper brush. Patches then come out completely clean, bore has a dull shine to it. Ithen pored hoppes oil down the bore , patch it and then pour it down again before putting it away. 2 days later, rusty as an anchor. I have given up. Someone in st. johns is going to get a free mosin and 600 rds of ammo...
 
I wil post some pics when I get back from South America in December. By then I will probably be able to sweep whats left up with a broom and dustpan.
 
On a brighter note I now have a mint condition Tikka m27. It will see nothing but non corrosive ammo. It looks like it came out of a catalogue!
 
Dave, you need to try a rust attacking bore cleaner and degreaser like RB-17. My MkI* Ross had an ugly, pitted, rusty bore that would not clean up and the rust just kept coming and coming. I'd get patches to come clean and the next time I would shoot it with non corrosive hand loads it would be buckets and buckets of rust again. It must have never been cleaned and shot half of the corrosive inter- war ammo in Canada. I coated an 8mm bore brush thickly in. RB-17 and went at it. After TWO applications and patch dry cycles that bore was spotless. It's surfaces looked a it like if the moon had rifling on it and it took the metal to the white instantly, but the rust is long gone and will hopefully never be back. Plus now my favourite Ross smells like pine sol and linseed oil. Nice stuff! I would seriously consider spending the $20 and getting a bottle from PJ's.
 
flying pig said:
Dave, you need to try a rust attacking bore cleaner and degreaser like RB-17. My MkI* Ross had an ugly, pitted, rusty bore that would not clean up and the rust just kept coming and coming. I'd get patches to come clean and the next time I would shoot it with non corrosive hand loads it would be buckets and buckets of rust again. It must have never been cleaned and shot half of the corrosive inter- war ammo in Canada. I coated an 8mm bore brush thickly in. RB-17 and went at it. After TWO applications and patch dry cycles that bore was spotless. It's surfaces looked a it like if the moon had rifling on it and it took the metal to the white instantly, but the rust is long gone and will hopefully never be back. Plus now my favourite Ross smells like pine sol and linseed oil. Nice stuff! I would seriously consider spending the $20 and getting a bottle from PJ's.
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ive never heard of RB-17 it sounds like good stuff. i think im going to try some. thanks for the input flying pig.
 
A bit late for this post, but I found it a useful read.

I just starting using this Chinese 7.62x54R in one of my finned 91/30s, and I agree that it appears to be violently corrosive compared to the other corrosive calibers on the market.

I've cleaned it twice since I shot it. Patched with hot water, Hoppes, brushed, and I still have serious rust forming in the barrel. I am making up a funnel for boiling water tonight.

It's interesting that someone else is having the same experience with this ammo; too bad though, it's not bad for accuracy.

Silverplate.
 
davemccarthy707 said:
I failed to mention that 50% of my job is corrosion control and inspection of aircraft. I have never seen anything as savage as this. Crazy.
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That is truly bizarre. Especially considering I've shot over 500 rounds of stuff that was made in the same factory as the ammunition you're shooting, out of an M38 Carbine that is the most rust-prone gun I own. Dang thing rusts if you give it a moist glance. I have had zero issues with rust after a normal cleaning. I hate to just give up on you, but I am 100% stumped.
 
Hi Guys, I'm the guy who bought the rifle under discussion and the 600 rounds of ammo from Dave. I came across the thread by luck and though it would be interesting to give my feedback on the rifle and ammo. First just to say, Dave told me all about the rusting issue but at the asking price it's like he said...someone's gonna buy some ammo with a free rifle sort of deal was struck.

When I bought the rifle the bore was really bright and clean so I left it in my cabinet...it's now dull and with light rust signs...yikes. As I trust my cleaning process (which came from online forums and trial and some horrible error on my early cheap mosins) I gave it a "shot" and tested the ammo in other rifles including my really nice mosin sniper (yes I'm the sort of crazy guy who shoots corrosive out of expensive snipers). Anyway, I tested the ammo about 6 days ago on the sniper and again on a couple of others with nice bores for comparison.

My cleaning process:
I clean by using cheap dollar store Windex knockoff (contains real ammonia unlike modern safer Windex), brush with a nylon brush 25 times, run a patch through, use a boresnake to dry inside the bore, a tissue to dry up the chamber and compressed air to blow out residual moisture. I then run a patch with Remington bright bore, run a nylon brush, patch dry. My final stage actually seals the deal, I use patches of WD40 and then run 10 passes with a nylon brush to loosen residual carbon fouling and repeat until clean. Usually all that's left is some streaks of copper in the bore which can be cleaned up with some stronger copper solvent if desired on occasion.

Results:
The sniper bore is still shiny and clean 6 days later (although there quite a few streeks of copper I need to disolve out).
The Polish mosin I shot at the same time looks good and clean too.

The rifle I purchased from Dave and have not shot at all is actually looking pretty nasty, I'm going to cut my little test short and clean it with my process tomorrow and see if it stops the tarnishing.

Hope someone finds this useful.
 
Flush the barrel IMMEDIATELY after shooting the last round. Then douse it with WD40 for the ride home.

Then full strip and clean when you get home with your favourite solvent and oil.

Bottomline:

Don't wait till you get home to do all your flushing and cleaning.
 
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You guys overthinking this.
Here is the example, you drive your car in the winter, its covered in salt. You take it to the carwash, the car wash use what? Soapy water.
Water dissolve salt, soap cleans the grime away that salt attaches to.
Apply this to rifle barrel and your problem will go away. As with anything made of steel, with time rust will come out and to prevent it you need to oil it.
That's why we use oil base rustproof on vehicles, thus you need to oil your barrel after cleaning to prevent oxydation of metal and rust formation.

G76
 
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