Frank, Take a look at NRA SR-42 target. Similar to the American Standard dimensions
(You need to Login or Register to view media files and links) NRA Pistol adopted the American Standard target and made some minor mods over the years. 50 yard is a lot closer to the original than SR-42 high power.
(You need to Login or Register to view media files and links) 4.8 50 yard slow fire Standard American Target - 8, 9 and 10
rings black. Target No. B-6, B-6(T) is Tag board, B-6(P) is Paper
and 6(C) is Repair Center.
X ring ......................1.695 in
10 ring .....................3.36 in
9 ring .......................5.54 in
8 ring .......................8.00 in
7 ring .....................11.00 in
6 ring .....................14.80 in
5 ring .....................19.68 in