Has anyone ever experienced corrosion in their Uniflow powder measure? I don't mean a little; I mean chunks with one 2" long. I started having trouble throwing accurate measures, so I took it apart. First, This was a Christmas present. And, no I don't leave powder stored in the measure. I have loaded about 300 rds with it. and empty it every time. The last 2 1/2 inches of the drop had large chunks of corrosion inside. I tapped it on the bench and probably a quarter cup of rust came out. Now, the last 2 1/2" looks totally pitted and brown. I am also wondering if flakes of corrosion got into my newly loaded rounds and what effect it would have on my gun.
New RCBS Uniflo corrosion
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medalguy
Member
What kind of "corrosion"? Rust? That would come from the barrel but other than that I can't imagine what kind of corrosion you could be seeing. I believe the body is cast zinc and that will corrode but that would be pretty obvious looking down the tube.
If it's rust, yes it could have certainly gotten into your ammo. Pull that ammo down. I would disassemble the measure and determine what is happening. The only way rust like that could have happened is for a lot of water to have gotten into the barrel or drop tube. Is it new? Contact RCBS if so.
Short, we need more information.
If it's rust, yes it could have certainly gotten into your ammo. Pull that ammo down. I would disassemble the measure and determine what is happening. The only way rust like that could have happened is for a lot of water to have gotten into the barrel or drop tube. Is it new? Contact RCBS if so.
Short, we need more information.
I have one that is very, very old. It came with the 2 rotors. The metering screw had some surface rust when I got it I cleaned it off with a wire brush, never to return. The rotors are metal but never had any rust.
Some thin does not sound right, as mentioned more info is needed or pictures??
Some thin does not sound right, as mentioned more info is needed or pictures??
GW Staar
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Clean it up with a rotory wire brush, and alcohol, and when it's clean and lookin purty again, get you some paste wax like Johnson's, and wax it up good.....let it dry and buff.
Wax it again once a month or so and you should be good. Indiana must be humid this year. BTW, waxing is the secret to making it throw more accurately as well....that and a baffle.
Wax it again once a month or so and you should be good. Indiana must be humid this year. BTW, waxing is the secret to making it throw more accurately as well....that and a baffle.
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HOWARD J
Member
It's probably made in China--if so--there is your problem
I have one 35/40 years old---never a bit of problems after thousands of rounds
I have one 35/40 years old---never a bit of problems after thousands of rounds
Well, first of all. yes it is corrosion. I can't see it could be anything else. The biggest piece was shaped with the contour of the drop chute. Wire brush/wax? Imagine an old metal fence post standing in a field about 20 years. That is what this last 2 1/2" looks like now. It would be very difficult to get any wire brush to the problem since the plastic hopper is permanently attached and the drop hole is small. I wish it were possible to take a picture of the problem. I am going to phone RCBS Monday and talk to them. I just assembled and started to use it this spring.
Magnum Shooter
Member
The plastic hopper is NOT permanently attached.
Grab the measure by the hopper and firmly rap the body just above the threads against the edge of a wooden bench, and the hopper will pop right off.
You can find video from RCBS here.
http://www.rcbs.com/resources/videos/
see Remove and Replace Uni-flo hopper.
Grab the measure by the hopper and firmly rap the body just above the threads against the edge of a wooden bench, and the hopper will pop right off.
You can find video from RCBS here.
http://www.rcbs.com/resources/videos/
see Remove and Replace Uni-flo hopper.
buck460XVR
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Sounds more like to me the powder is breaking down because of some kind of chemical reaction to something on the surface and resembling rust. A quarter cup of rust would mean you've lost a quarter cup or more of metal. Ain't much more than that on the whole Uniflow. As others have said, pics would help.
Did you clean the measure out before using it.?? Let RCBS deal with it.
The Hopper IS NOT meant to be taken off, you will probably crack it. Look at the video closely in the beginning. It is for REPLACING a broken one.
The correct video. "If it is cracked or destroyed"
http://www.youtube.com/watch?v=5EF_aPMj6sY
The Hopper IS NOT meant to be taken off, you will probably crack it. Look at the video closely in the beginning. It is for REPLACING a broken one.
The correct video. "If it is cracked or destroyed"
http://www.youtube.com/watch?v=5EF_aPMj6sY
groundsclown
Member
I'm curious to see this rust that came out. A 2"+ piece? Ya sure it wasn't from a mud dauber?
Things packed away in garages can tend to get all sorts of critters calling it a new home.
Things packed away in garages can tend to get all sorts of critters calling it a new home.
GW Staar
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The first thing I noticed, the first time I saw the video, is that he removed a new hopper quite easily and merely remounted the same hopper.
I removed my hoppers on all three of mine and used a drill, wire brush, and a grinding stone.....then a sanding disk.....smoothed them all good then waxed. Hoppers went back on fine with no breakage. They repeat drops much better.
I removed my hoppers on all three of mine and used a drill, wire brush, and a grinding stone.....then a sanding disk.....smoothed them all good then waxed. Hoppers went back on fine with no breakage. They repeat drops much better.
solvability
Member
Does not look like rust - mottled surface of casting.
solvability
Member
Not rust - some sort of residue - clean it up.
groundsclown
Member
I'll admit it sure don't' look like powder buildup that was left behind.
I see what appears to be green paint on the pieces?
Could this be some kind of casting "slag" from the factory that wasn't cleaned off?
Either way I'd contact rcbs. Theyll make it right.
I see what appears to be green paint on the pieces?
Could this be some kind of casting "slag" from the factory that wasn't cleaned off?
Either way I'd contact rcbs. Theyll make it right.
medalguy
Member
Whatever it is, RCBS will probably insist on replacing the assembly. Take 'em up on the offer if so.
Jesse Heywood
Member
Looks like the drop tube was partially plugged and powder was trapped.
Whatever the cause, RCBS will probably send a whole new measure. If they say they will send a new body, tell them you're not sure you can get the plastic cylinder off. Since they don't want a dissatisfied customer....
Whatever the cause, RCBS will probably send a whole new measure. If they say they will send a new body, tell them you're not sure you can get the plastic cylinder off. Since they don't want a dissatisfied customer....
Update
Just talked to RCBS. They said sometimes in the casting process, the sand will adhere to the inside of the chute and there will be improper cleaning after that process. He said he has seen a couple come in like that. Normal consumer cleaning will not clear the melted sand away. Anyway, they are sending a new unit with hopper attached plus a new measuring screw. Great customer service. I am going to wax the inside as suggested.
Just talked to RCBS. They said sometimes in the casting process, the sand will adhere to the inside of the chute and there will be improper cleaning after that process. He said he has seen a couple come in like that. Normal consumer cleaning will not clear the melted sand away. Anyway, they are sending a new unit with hopper attached plus a new measuring screw. Great customer service. I am going to wax the inside as suggested.
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