50 years.
After a brief mental review the core group is 1940 to 1970 dates . The pre 1935s cancel out the post 2000s . The 1866 Chessipot with the 1871 issue stamp tilts the balance to something close to 1953 .
I'd go with average age of 70-72 years .
In the time of darkest defeat,our victory may be nearest. Wm. McKinley.
I was young and stupid then I'm older now. Me 1992 .
Richard Lee Hart 6/29/39-7/25/18
Without trial we cannot learn and grow . It is through our stuggles that we become stronger .
Brother I'm going to be Pythagerus , DiVinci , and Atlas all rolled into one soon .
BP | Bronze Point | IMR | Improved Military Rifle | PTD | Pointed |
BR | Bench Rest | M | Magnum | RN | Round Nose |
BT | Boat Tail | PL | Power-Lokt | SP | Soft Point |
C | Compressed Charge | PR | Primer | SPCL | Soft Point "Core-Lokt" |
HP | Hollow Point | PSPCL | Pointed Soft Point "Core Lokt" | C.O.L. | Cartridge Overall Length |
PSP | Pointed Soft Point | Spz | Spitzer Point | SBT | Spitzer Boat Tail |
LRN | Lead Round Nose | LWC | Lead Wad Cutter | LSWC | Lead Semi Wad Cutter |
GC | Gas Check |