I have purchased two CZ 527's in .22 Hornet the last couple months and both came through with horrendous barrel pitting and such. I was in shock when I receive the 2nd 527, bore scoped it and it had the exact same barrel pitting condition. Both guns were returned back to GB seller. I have posted many pics of each gun on the other blog/website I am a member of and everyone was shocked at what they saw and basically no one had an answer as to what it was or what caused it. There were many guesses but only guesses. On the first gun I ran patches w/shooters choice thru it and it didn't even touch it. I then used some fine lapping compound with 100 strokes to see what that would do and again, didn't touch it. I finally returned the gun/s. Many members of the other blog had purchased many 527's in .22 Hornet and have never see anything like this before stating their bbl's came through perfect. One member stated that he received a BRAND NEW gun that had the exact same bbl issue which was shocking and hard to believe. I took many bore scope photos and both guns were identical and pics were identical. Whatever happened to the one gun happened to the other. Some members felt that the barrels were bad right from the factory and this condition just manifested itself. The serial #'s of the two 527's were over 1 million apart so a "bad batch" of bbls from one run didn't fit the puzzle. Another clue is that in both guns this pitting condition was ONLY in the first half of the barrel, the second half (muzzle end) was perfect which throws a wrench into many theories. The exterior of both guns was super with no rust what so ever, nice and clean. To date this condition remains a mystery and I and others would very much like to solve it.
I did recently read on one Shooting blog (don't think it was this one) that one gent stated he wasn't sure what in the HeL.. CZ packed their guns with prior to shipping but it must have been a combination of 90 wt gear oil, tar, Gorilla glue etc etc... something to that regard but he COULD NOT get it clean after spending hours with no results. He finally turned the gun bbl down and ran brake cleaner down it and this black gunk come pouring out.
So possibly this new info just might be a clue, don't know ?? If buyers are shooting their new guns with whatever this concoction is that CZ ships their guns in I can only assume that the barrel would end up severely compromised and possibly end up looking like my pics. Just a guess....
I am going to post several pics of BOTH gun barrels and hopefully someone here just might know what the answer is and solve the mystery. As you can see you cannot tell the pics from one gun to the other.
I not possitive but I doubt very much this condition is just from a "general" lack of cleaning after shooting.
The barrels were so pitted/rough that you could feel the roughness in the bore scope being pushed throught, thats bad !!
You can also see some copper fouling is a few pics. These are just a few of the pics, I have many more.
I sure hope someone has seen this and can solve the mystery. I was even thinking of sending pics to CZ but not sure if that would help,
I did recently read on one Shooting blog (don't think it was this one) that one gent stated he wasn't sure what in the HeL.. CZ packed their guns with prior to shipping but it must have been a combination of 90 wt gear oil, tar, Gorilla glue etc etc... something to that regard but he COULD NOT get it clean after spending hours with no results. He finally turned the gun bbl down and ran brake cleaner down it and this black gunk come pouring out.
So possibly this new info just might be a clue, don't know ?? If buyers are shooting their new guns with whatever this concoction is that CZ ships their guns in I can only assume that the barrel would end up severely compromised and possibly end up looking like my pics. Just a guess....
I am going to post several pics of BOTH gun barrels and hopefully someone here just might know what the answer is and solve the mystery. As you can see you cannot tell the pics from one gun to the other.
I not possitive but I doubt very much this condition is just from a "general" lack of cleaning after shooting.
The barrels were so pitted/rough that you could feel the roughness in the bore scope being pushed throught, thats bad !!
You can also see some copper fouling is a few pics. These are just a few of the pics, I have many more.
I sure hope someone has seen this and can solve the mystery. I was even thinking of sending pics to CZ but not sure if that would help,