I’m currently on Guadalcanal scouring the area. I recently came across this cartridge. Given the location, this is WWII era ammunition. Any ideas?
I measured the base of the cartridge at 17mm and the 20mm at it’s largest diameter. The projectile itself was never recovered and I regret to say that I didn’t take any additional measurements. It’s been driving me crazy trying to ID this round. Any help would be greatly appreciated.