Heres a thread that covers all the possibles for what's causing your tumbling. Unless the barrel is completely shot out, which it likely isn't, you should be able to sort out the issue. I reckon your gun is just fine, try stepping up bullet diameter or velocity or maybe you are putting too much crimp on your loads. Lots of info if you search and it keeps coming back to the same set of circumstances for what could be causing your problem.
CZ Shadow 2 - 147 gr tumbling - 9mm/38 Caliber - Brian Enos's Forums... Maku mozo!
Thank you for the link.
The 147 grn bullets are .357 and were pushed with 4.0 grn of N340 .(4.1 is the published maximum)
I guess all the factory stuff stuff was too. Fiocchi dosn't have a great name for accuracy,it groups ok in my Sig but with Geco its literally a one hole shooter.Sellior and Bellot and Geco are about equal in quality and price,its what alot of shooters are using here.
My mate is bringing some Speer cartridges and some Nato Ball.
We have removed the human error with the Randsome rest,but for not getting any groups and with a spread of about 12" with everything tried its the gun thats playing up.Looks like the crown is dinged as the fingers on the bush look good and everything else looks ok.
Being produced in the 1970's it was likely made with pretty mild 124grn cartidges in mind.
"Sixty percent of the time,it works every time"
Please excuse spelling, as finger speed is sometimes behind brain spped........ Or maybe the other wayy.....
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