Reply To: Chamber Lube

Forums Springers, Pumpers, C02, & Vintage Chamber Lube Reply To: Chamber Lube




As these guys have said chamber lube is a big no no…

I've had several Diana's through the years that had damaged piston seals from the factory and another often overlooked problem with them is the rather cheesy breach seal set up on them.

The way the breach is angled and the main reason for barrel droop on a lot of Diana's 

Often they need to be shimmed for a proper seal. I've heard of some using dental floss but I use steel shim material and make my own. The seal should sit at 8 to 10 thousands above the the breach. 


   I have a 2015 model 34 and never had an issue with the breech seal. It is not shimmed and currently sits at .009 above the breech surface. Don't see how the angle of the breech has anything to do with barrel droop. The angle of the breech end of the barrel is the same as the angle of the end of the compression chamber.