Did I get a lemon Marauder pistol .22? Groupings

[SpeedyBB]

I think he should just call crosman and get a barrel. It shouldn't be shooting any pellets that bad, something is wrong. That's just 15 yards, it's bb gun accuracy. The barrels aren't expensive, and if it's anything like the marauder, easy to install.

[K.O.]

Last year I ordered another crosman .22 barrel for my marauder, it grouped a lot worse than yours is, they exchanged it for another at no charge, now I have a good one.
Crosman has been known to have .22 barrel issues for a long time now, you can lurk old threads on various forums and read about it going way back to when the marauder first came out. I wonder what exactly is going wrong with some of them. I know that with that really bad barrel I briefly had in my possession felt too loose pushing a pellet through, and then way too rough and snug at the very last .75" or something, it was all kinds of messed up compared to the barrel my marauder came with and the third one I got.
Does crosman do a 10 yard group with the prod at the factory like the marauder? That test ought to catch really bad barrels and stop guns shipping with them.

I suspect the barrel lottery issue is not fixable for some reason and it's why they started selling them with lothar walther barrels, right now it's just an option but maybe it'll be standard eventually.

Nah... they have moved barrel production in house now and doing a better job of it... they now ream the DOM tube to final dimension pre buttoning...but... they still do not know what a leade is... I suggested to Crosman Engineer that they change tooling a touch to fix that... he said he would bring it up with the tooling guys...They are listening and acknowledging  us... makes me hopeful...

one of the main problems with the old barrels was that some were oversize and on some the crown cutter would wipe out rifling...

they are now making Barrels in house... not perfect but getting much better... I picked up a Maximus it had a slightly mis-cut chamber... but once I fixed that it stacks CPHP and it is very common for them to like them... they are much tighter than the old Disco barrels...

so yeah in the mean time check your chamber and leade also..

your barrel may be pre in house and I do not know if they have also moved to in house barrels for the Prods yet...

[SpeedyBB]

Last year I ordered another crosman .22 barrel for my marauder, it grouped a lot worse than yours is, they exchanged it for another at no charge, now I have a good one.
Crosman has been known to have .22 barrel issues for a long time now, you can lurk old threads on various forums and read about it going way back to when the marauder first came out. I wonder what exactly is going wrong with some of them. I know that with that really bad barrel I briefly had in my possession felt too loose pushing a pellet through, and then way too rough and snug at the very last .75" or something, it was all kinds of messed up compared to the barrel my marauder came with and the third one I got.
Does crosman do a 10 yard group with the prod at the factory like the marauder? That test ought to catch really bad barrels and stop guns shipping with them.

I suspect the barrel lottery issue is not fixable for some reason and it's why they started selling them with lothar walther barrels, right now it's just an option but maybe it'll be standard eventually.

Nah... they have moved barrel production in house now and doing a better job of it... they now ream the DOM tube to final dimension pre buttoning...but... they still do not know what a leade is... I suggested to Crosman Engineer that they change tooling a touch to fix that... he said he would bring it up with the tooling guys...They are listening and acknowledging  us... makes me hopeful...

one of the main problems with the old barrels was that some were oversize and on some the crown cutter would wipe out rifling...

they are now making Barrels in house... not perfect but getting much better... I picked up a Maximus it had a slightly mis-cut chamber... but once I fixed that it stacks CPHP and it is very common for them to like them... they are much tighter than the old Disco barrels...

so yeah in the mean time check your chamber and leade also..

your barrel may be pre in house and I do not know if they have also moved to in house barrels for the Prods yet...

Good to hear. You sure it's all barrels and not just lothar walther barrels?
I got my .22 marauder last summer after it was said crosman improved their barrels, maybe this is what you're talking about. Initial barrel the gun came with grouped JSB 18.13's very well, but showed so much promise with the 14.3 domes which I'd prefer to shoot due to price, same POI as the really cheap walmart CPHPs, and the durability (JSBs get bent easily in shipping). It would throw fliers with the domes on a semi regular basis, so I ordered a second barrel, and it was the horrible one. 2" and bigger at 25 yards, massive horizontal stringing. They exchanged the bad one for the one I currently have in my marauder. It shoots premier domes quite well which is what I wanted. I've gotten some .5" groups at 50 yards but I want it to do that really reliably, I feel like I may be close.
Maybe that second barrel was part of their old batch? Not sure. Pellets pushed through that barrel would actually be damaged, you'd get lead shavings. Both the first and third barrel feel pretty loose pushing a pellet through until you get to the choke and show uneven rifling grooves on the head of the pellet even though they are both capable of good accuracy.

[K.O.]

well I used 2260 and disco barrel for my small fleet of 13xx and 13xx Hybrid pumpers...one had the rifling damage and I could have sent it back... But I had planned on cutting it down to 22 " any ways... there have been other flaws like burrs at the transfer port... a weird bore that looked like the button had been pulled thru twice... shallow seam/deep scratch in bore parallel to direction of travel...

well to shorten the story all needed a leade some worse than others... but worked on em and each of my pumpers can do .75" at 30 yards some .5"... and that is still with a plastic barrel band... they do have steel breech tho...

The L.W. Barrel have and always will be made by L.W. ... I  suspect that L.W. also machines to spec/application for Crosman rather than just selling Blanks..

The .25 Mrod Barrels are made by Green Mountain I hope they continue to do so... they are good to very good barrels... But guess what no leade and that is both of mine... both did not need the work to send the 25.4 grain pretty much moa @ 50 yards in good conditions... cudas an H&N FTT did well also
one Did not like the Benji domes at all Cudas were sub 1.5 moa... gave it about a 1* leade for the cast 40g BBT and the 27g Benji are almost as good as the JSB...
the other I am keeping pellet oriented and it almost tolerated the Benji pellets... this barrel got about a 45* leade using tapered dowel and wet dry... mostly .75 ish at 50 with them now...

I think the Chinese springer/rams will continue to have Chinese barrels... oh I made a 1325 pumper using a XL 725 Barrel and 2100 b pump... the two 725 barrels I have had very rough bores grabbed on a pellet all the way thru but no tight spots... Fire lapped one have not used the other... before fire lapping was pretty accurate  with H&N 19g at ~650 fps the 25.4 kings were accurate also...

So point is most barrels do respond to some tuning but some will not but I have been lucky so far...most have been turned good and a few very good... and not super pellet picky...

[Hawkeye51]

Death_By_Air

I had a similar problem about a year and a half ago. Did every home fix that didn't require a lathe, because I bought it used. NO HELP. Took the barrel off and inspected it after a re-crown and lapping.  Put a strong light at the bottom end of the loose barrel and looked into it with a magnifling glass from the crowned end. Slow rotation at a slight angle allowed me to see deep chatter marks (from the tooling) in the grooves about 3 inches from the end. No way to change that!

Ordered a new barrel from Crosman, on my dime. Did the same work to it as the first one, clean & polish leade, open & smooth transfer port, re-crown and lapped. Shoots one hole groups at 25 yards. I love the gun, its tuned to shoot in the mid 850 fps range.

Don't give up. Pull your barrel off and inspect it very closely with magnification if possible. Shine light in from the bottom, not the top. Might get a sympathetic person at Crosman that will send you a new barrel. If not, just buy one. Makes all the difference in the world. Good luck.

[Duckfish]

Tear it down, look for obvious stuff, order a new LW or crosman barrel, put it back together it's pretty easy to work on.  Lots of stuff on utube, and lots of help here.  ( maybe too much help). Lol

[Death_By_Air]

A pellet not on your list that is very accurate out of my p-rod and accurate for many others also is the H&N FTT 14.66.  Give them a try.

Haha thats actually the first tin I shot through it! The copper ones right? It grouped "ok" which is why I bought all the other tins I listed above as a place to start testing thinking it was just those it didnt like. But I put the whole tin through hit already lol.

[Death_By_Air]

Thanks for the info K.O.

Interesting stuff.

[Death_By_Air]

Tear it down, look for obvious stuff, order a new LW or crosman barrel, put it back together it's pretty easy to work on.  Lots of stuff on utube, and lots of help here.  ( maybe too much help). Lol

I dont have any equipment to do any modifications to it, recrown, etc.

A LW barrel would be sweet! Any sights you guys know of that sell one fitted for the Prod? I see they sell some on the crosman site but they are for the 13xx or marauder rifle. Are they interchangeable? seems like I remember the Prod having some indentions near the real or am I wrong?

[larspawn]

DBA a recrown costs like less than a dollar. It’s literally one round head brass screw chucked in a drill. If you don’t have access to any polishing compound gritty toothpaste can work. It’s worth a try and if it doesn’t work at least you can practice and it won’t make it worse or ruin a good barrel.

[Nvreloader]

DBA

Go here and read the info, so easy a caveman can do it,  LoL
https://www.gatewaytoairguns.org/GTA/index.php?topic=130555

Hth's,

Tia,
Don

[Talan]

Make sure all your barrel to receiver fasteners are snug and remove the barrel band.  Just something that worked for me once or twice on rifles.

[Pelletjunkie]

If you can’t find any of the flaws listed in Nervoustriggers thread, just order another barrel from Crosman. They are so cheap that even a caveman can afford one.

[Rico14]

A pellet not on your list that is very accurate out of my p-rod and accurate for many others also is the H&N FTT 14.66.  Give them a try.

Haha thats actually the first tin I shot through it! The copper ones right? It grouped "ok" which is why I bought all the other tins I listed above as a place to start testing thinking it was just those it didnt like. But I put the whole tin through hit already lol.

No. not the copper ones.

[accu fan]

Jim @ wicked air rifles has barrels for the Prod & they are accurate.

[moorepower]

Jim @ wicked air rifles has barrels for the Prod & they are accurate.

I am not sure he is doing them any more. I would get a new Crosman barrel. I had to cut mine back before I could crown it. Mine much preferrs the 5.54 head size, but strangely likes the CPHP's, but not the domes?? I "need" to order some stuff from Crosman and a Prod barrel will be on the list. I have a CS 2240 with 14.5lw barrel, so I should be able to order another LW barrel. That would be ideal. I bought the cutter for the Oring groove and the rest is fairly straight forward.

[GreyBeard1851]

Whate is (leade)?

well I used 2260 and disco barrel for my small fleet of 13xx and 13xx Hybrid pumpers...one had the rifling damage and I could have sent it back... But I had planned on cutting it down to 22 " any ways... there have been other flaws like burrs at the transfer port... a weird bore that looked like the button had been pulled thru twice... shallow seam/deep scratch in bore parallel to direction of travel...

well to shorten the story all needed a leade some worse than others... but worked on em and each of my pumpers can do .75" at 30 yards some .5"... and that is still with a plastic barrel band... they do have steel breech tho...

The L.W. Barrel have and always will be made by L.W. ... I  suspect that L.W. also machines to spec/application for Crosman rather than just selling Blanks..

The .25 Mrod Barrels are made by Green Mountain I hope they continue to do so... they are good to very good barrels... But guess what no leade and that is both of mine... both did not need the work to send the 25.4 grain pretty much moa @ 50 yards in good conditions... cudas an H&N FTT did well also
one Did not like the Benji domes at all Cudas were sub 1.5 moa... gave it about a 1* leade for the cast 40g BBT and the 27g Benji are almost as good as the JSB...
the other I am keeping pellet oriented and it almost tolerated the Benji pellets... this barrel got about a 45* leade using tapered dowel and wet dry... mostly .75 ish at 50 with them now...

I think the Chinese springer/rams will continue to have Chinese barrels... oh I made a 1325 pumper using a XL 725 Barrel and 2100 b pump... the two 725 barrels I have had very rough bores grabbed on a pellet all the way thru but no tight spots... Fire lapped one have not used the other... before fire lapping was pretty accurate  with H&N 19g at ~650 fps the 25.4 kings were accurate also...

So point is most barrels do respond to some tuning but some will not but I have been lucky so far...most have been turned good and a few very good... and not super pellet picky...

[Ribbonstone]

Had hoped they got a handle on the barrels....have been fewer complaints like yours in the last years.Was a common complaint when they first came out (somthing like middle 2011?).

Have one of those early P-Rods.  BArrel was roughand over choked (seemed to be the common problem 7-8 years ago).  Actually world shoot a couple of pellets quite well for 30-35 shots...groups getting a bit larger and larger groups as the rough barrel collected  lead.

MIght be other issues causing the poor showing...and I'd check all the usual suspects (leaks,loose barrel-breech attachement, odd side pressures on the shroud, any sight of clipping, and some chronograph readings to be sure it's consitent in launch speeds.