Upper limit on Caliber size?

[Stuck]

We have a 17.9mm here which is about to become a Section 1

Please PM or call me if that ever comes up for sale :shakeshout:

[ovenpaa]

It is a Danish Snider from 1861 and I suspect even if Hell froze over Christel would not part with it. I am looking forward to seeing it on the range.

[Blackstuff]

I'm sure i read it was 40mm for rifled barrel firearms but you can go larger for smoothbore i.e. cannons

[Gaz]

more to the point, where's the. Backstop?

From Google Earth, somewhere around Brent Cross shopping centre.

For A and B turrets it's Scratchwood Services, known these days as London Gateway Services, on junction 2 of the M1. X turret (second rearmost) used to be trained sideways onto the Norton Rose lawyers' HQ next to City Hall, but they've since retrained it onto something else in line with Y turret, which points astern.

I can also heartily recommend the bar directly overlooking HMS Belfast, on top of the ticket office for the ship. It ain't cheap, but the booze is good quality and in weather like this it makes an excellent post-work-bevvy venue.