Didn't even realize I was a fan of "obsolete" rounds until this thread.

Regularly used rounds are:

Rifles,

.22 Hornet (Winchester 70)
.25-20 (Savage 23)
.250-3000 (Savage 99)
6.5x55mm (Mauser 94)
7x57mm (Mauser 93)
.30-30 (Wincester 94)
.300 Savage (Savage 99)
.303 Savage (Savage 99)
.35 Remington (not sure if this is obsolete, but it is in a Remington 14 pump gun)
.375 Winchester (Winchester 94)
.45-70 (Marlin 1895 & Sharps)

Pistols,

.30 Mauser (1896 Mauser)
.30 Nagant (Nagant Revolver)
.32 S&W (breaktop S&W)
.32-20 (Colt SAA)
.38 S&W (breaktop S&W)
.38-40 (Colt SAA)

Shotguns,

Maybe???

16 Ga. (Cresent Double & L.C Smith)



I hate change, it's never for the better.... Grumpy Old Men
The more I learn, the more I realize how little I know