45-82 Winchester
The 45-82 Winchester is part of
the 45 Winchester family which
includes 45-82,45-85,45-90. The
case  is the  same except for the
Head Stamps denoting the load
size  of power, 82,  85,  90 grains
of Black powder.  The 45-90  
was first in 1886, and the 82 and
85 followed. The 82 and 85 are
less available than the  45-90.