Older mystery round-maybe 303 gallery

Hey guys, new to the forum. I’m a casual collector at best, but do certainly enjoy it so this was a welcome find.

So here’s the deal. I was looking through a few unsorted shells and found one that I’m somewhat unsure on. I don’t have a set of calipers unfortunately so I’m not sure exactly what caliber it is, but it seems to be .35 or .38. Other than that, I really have no idea. Any information would be great!

DC: Dominion Cartridge Co., Canada,
12 06: December 1906
C VI: Cordite Mark 6

Soft Lead Bullet: Could be either a reload or a “Gallery” Load;

In anycase, .303 (British) Cartridge case.

Originally made for Mark VI load (215grain RN FMJ ) but probably “re-made” into a Gallery Load, with a 130-150 grain Projectile.

Primer Looks “original”, although, with early .303 cases, Primers were NOT crimped, so it is hard to tell if Original or Reprimed.

Check with Canadian Collectors about existence of “Gallery Loads” in early Canadian Production.

Doc AV

It is a Canadian .303" Gallery Practice MkII using a MkVI case.