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Us 75mm m5a1 case
- Thread starter MINENAZ16
- Start date
If I recall correctly they had to do with keeping the silk propellant bag near the base of the cartridge case, for better initiation of the powder. Don't remember what the reference was, it was years ago that I saw others speaking about it.
blackwatch
Well-Known Member
TM 9-1901 122-124 page 117.
