It’s difficult to see if your case has a headstamp or not. Most collector refrain from polishing cartridges as much important information (light headstamps, case mouth seals, primer seals, tip colors) can be lost.
One thing you need to know is that Japanese Type 92 cartridge has no headstamp. In fact, most of Japanese WWII cartridges don’t have any headstamps.
Thanks, but one thing I do know is that I have both 7.7x58 and 7.7x58SR rounds WITH headstamps. And if you are familiar with Japanese headstamps, you will notice that the faint markings at 9:00 on the pictured case have some vague similarity to known Japanese marks. Thus my comment. Ok?
How do you tell the difference between a 7.7 x 58mm Type 92 Heavy M.G. A.P. and a 7,7 x 58mm Type 97 Light M.G. A.P.? Does the type 92 have a semi rim and the type 97 a rimless?
yes japanese using headstamped and non headstamped cartridges
but some of their hedastamps can be confused with “other” mark such extractor ,firing …
Tom, I believe the variations on the 7.7mm ammunition is as follows:
Type 97 tank machine gun
Type 99 rifle
Type 99 LMG
Type 89 AMG
Type 92 HMG
Type 98 Navy machine guns (both Lewis and Vickers).
Type 92 HMG cartridge is semi-Rimmed
and Type 99 rifle cartridge is Rimless.
I hope this will help，friend
Thanks for the info! Tom from MN