Sorry to hear you got a bad Hatsan barrel. Mike Ellingsworth on youtube makes videos about that.https://www.youtube.com/@MrSteppingstone888/videosReturning your rifle for another rifle is your best chance for success. The cost of buying-machining-installing a BEST QUALITY Lothar Walther airgun barrel would be about 3x what the rifle is worth.Drilling and relining the bore seems like it MIGHT be an option,but you still need a lathe and some skill. I don't have sources or prices for barrel liners.************When I worked for a production factory we needed a large number of custom springs with a specific ID size and tolerance. Everyone we asked for a quote told us NO-CAN-DO. We basically had to sort springs and even made a sizing mandrel so we wouldn't have to discard too many out-of-our-spec springs.Things may have changed in 20 years but I suspect not by much. I have NOT seen tight tolerances on wound springs especially those made for spring-piston air rifles.I see size variation from spring to spring AND from one end of a spring to the other end... like they were wound on a tapered mandrel. I ALSO see imperfect roundness on MANY springer springs.This is not necessarily BAD, but it is IMPORTANT to know that tight dimensional tolerances and perfect roundness are not guaranteed.My measurements on a Mod95 spring:OD = 0.750"WireDia = 0.125"ID = 0.500"Active Coils/Turns = 42FREE Length UNSET = 13.875"I'm NOT providing tolerances because I don't know how wide they CAN be.*************You should make your guides a few thousandths OVERSIZE and slowly trim them down to fit the ONE SPRING - ONE END you will use for the guide. Trim guide and TEST FIT often until you get a nice SNUG fit and have some difficulty REMOVING the guide. THEN try the guide IN THE OTHER END OF THE SPRING. Depending on which spring end you started "tuning" your guide, the guide fit will likely be too tight or too loose on the other end of the spring. If you MUST have a top-hat you should SIZE IT for the actual FRONT end of the spring.IMO Hatsan coil spring rifles are not "oversprung". Cutting coils will drop muzzle energy. A small reduction in muzzle energy is not bad and may actually improve how YOU feel about shooting that rifle.Almost all of my Hatsan springers have the longer fitted spring guide and NO top-hat. I prefer to remove and discard the top-hats in my Striker and Edge rifles and use the extra space to make the main guide longer. IMO the longest main guide possible with no top-hat makes the Hatsan rifles shoot the best they can... for the bargain springers they are.The longest fitted spring guide provides a nice shot cycle but can sometimes drop the muzzle energy up to 5%. I'll make that trade, -5% muzzle energy for a sweet shot cycle, every time.I HAVE overfilled Hatsan Vortex AIR springs which does result in an oversprung rifle. Velocity stops increasing and starts to decrease as the cocking effort gets silly high and the shot cycle becomes super harsh, possibly damaging the rifle. I'm certain you could get that oversprung condition with a more powerful coil spring but it won't happen with the factory coil springs.Hope the next Mod95 has a good bore :-)
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