cz 75B Barrels?
- Thread starter saxsaxsax
- Start date
ambishooter
CGN frequent flyer
- Location
- Southeastern Canuckstan
try Select Shooting Supplies
Blastattack
CGN Ultra frequent flyer
- Location
- Winnipeg MB
How many rounds have you put through it? It should last 50k to 100k rounds before needing replacement.
Blastattack
CGN Ultra frequent flyer
- Location
- Winnipeg MB
That's brutal dude. Is it just the inside of the barrel that's worn or are the external riding and locking surfaces also badly worn? The numbers I gave are on the low end. I've heard of Glocks hitting 750k before being retired (Range gun with little maintenance).
Blastattack
CGN Ultra frequent flyer
- Location
- Winnipeg MB
Yeah, you can literally almost never burn out any barrel with cast lead bullets. It needs a good cleaning and should last many ten of thousands of rounds more.
Its absolutely lead build up, use good chemicals and a brush to clean it out. your barrel is just fine. Its not accurate as the internal diameter is smaller than when you first got it due to lead build up, its deforming the bullets, so they are not as accurate, that is why your accuracy is down. Clean it out, and you will be surprised.
Blastattack
CGN Ultra frequent flyer
- Location
- Winnipeg MB
I clean only when performance degrades. You absolutely must clean immediately after every outing if you are using corrosive ammunition, otherwise your gun will rust away.
Blastattack
CGN Ultra frequent flyer
- Location
- Winnipeg MB
Generally; Berdan primed ammunition with corrosive primers that use potassium chlorate as an oxidizer. This generally encompasses cheap and old surplus ammo from eastern bloc states and allies, including the USSR, China, Ukraine and others. Black powder can also be considered "corrosive", but that is due to the fouling being hygroscopic (attracts and retains water) and not due to any actual corrosive properties of the fouling itself.
Boxer-primed ammunition can also use corrosive primers.
A barrel with 25K rounds through it should not be worn out, especially if they are mostly lead bullets. It is entirely possible for a barrel to have a third of its rifling gone, yet still provide good accuracy:
http://pistol-training.com/archives/8648
Note also that the only reason that barrel was so badly worn after 50K rounds was because most of those rounds used lead-free primers, which have more abrasive residue than regular lead styphnate ones.
Your CZ barrel is most likely badly leaded. Get either some bronze wool or copper scouring pads, wind a piece around a brush or a jag to get a tight fit in your bore, and give your barrel a good scrub. Once you get all the major chunks of lead out, finish up using patches cut from a lead removing cloth or patches smeared in J-B Bore Cleaner for a final polish.
A barrel with 25K rounds through it should not be worn out, especially if they are mostly lead bullets. It is entirely possible for a barrel to have a third of its rifling gone, yet still provide good accuracy:
http://pistol-training.com/archives/8648
Note also that the only reason that barrel was so badly worn after 50K rounds was because most of those rounds used lead-free primers, which have more abrasive residue than regular lead styphnate ones.
Your CZ barrel is most likely badly leaded. Get either some bronze wool or copper scouring pads, wind a piece around a brush or a jag to get a tight fit in your bore, and give your barrel a good scrub. Once you get all the major chunks of lead out, finish up using patches cut from a lead removing cloth or patches smeared in J-B Bore Cleaner for a final polish.
