I notice looking around online at most gunshops that Gamebore cartridges are pretty much non-existent on the Australian market. I know that in the UK market Gamebore is the best selling cartridges and very high quality.
I have found a few dealers who sell them in Vic and at relatively reasonable prices as well, e.g. $135 for a slab of Black gold (their top cartridge), $120 for a slab of White gold (a favourite of the UK), $99 for a slab of Velocity (good training shell)
Would love to hear some thoughts of people who have used Gamebore cartridges and why they arn't bigger in Australia?