Scorpion Pistol .... 15.5mm
Mk5 Meteor ......... 15.7mm
also my Mk2 Webley Vulcan in .177 ..... 14.75mm
The idea was to put a silencer on the .177 Meteor but in all honesty it would make it a bit long. Might finally get around to taking the piss-awful Webley Pro-System off the Vulcan and put a decent silencer on. It will involve cutting off the aluminium tube that's crushed onto the barrel from the internals of the silencer. I gas-rammed the Vulcan a couple of years ago and it's up there on the 12ft/lbs limit and does pop a bit without some moderation.
UPDATE - 9th June 2011
this is the tasty Webley Pro-System silencer ..
This is a later pic of the gun ..
Turns out that the tube that's crushed onto the end of the Vulcan barrel is actually steel not ally, and on closer inspection my guess it was heated up and shrunk on .. bit of a permanant fixture. Also it's noted that at some point between the gun leaving Brum and arriving at me (via North-West England which is where I bought it from) it lost about 4 inches off the barrel through some fairly injudicious use of a hacksaw and file. The gun shoots as straight as anything so whoever did it was either really lucky or they re-crowned the barrel. I've had a good look and it doesn't appear to have been crowned, but I'm not going to do anything about it on the basis that if it ain't broke, don't fix it.
I tried some Birchwood Casey Super Blue on the offending part and it's now matched to the rest of the barrel making the business end actually 15.95mm in diameter. Plan is to get one of those 16mm - 1/2UNF brass adapters off ebay and put a Weihrauch moderator on that's currently sat on the bulked AS2250X Crosman and getting bugger all use.
So it would seem I'm ending up putting a decent silencer on the Vulcan rather than on the old .177 Meteor. That's my life that is .. start off doing one thing and end up doing something else.
