Brother Geiger, Have you had your 34 tuned yet? Here's my theory. After shooting my guns for a while with JSB's and Pred's,...and I mean for a while,...like 2K rounds, If I shoot anything much lighter, I get some dieselling. Like the whole gun is used to them or something (J's and Preds). But the second I try the lesser weight pellets like the Beeman FTS, or Silver-Bears, I get a minimal amount of "vapor" in the barrel. I've thought of shimming the breech a tad, but haven't tried it yet. Seems to be fine around the breech area,...no blow-out marks around the exhaust port,...and besides, it will plain slap a squirrel of a tree branch!!!! I'd love to try the .22 Cro-Mags in mine,...but according to CDT, this might damage the spring,...too heavy!!!! I do have half a tin of the discontinued Benji-Sher domes in 14.3 grains that are pretty decent in my 392 pumper, but can't bring myself to use them. This spring I hope to get a .22 cal CO2 crosman 2260 SE to use the FTS and SB's with. Next pellet to try in my 34 will be the RWS Super-Domes. Very good pellet in .177 cal.
Ralph, Sorry for hyjacking your post Bro'!!! Hope that Panther purrs when you get done with it!!!! tjk