I posted this on the old forum and cut and pasted it here. Maybe a mod could make it a sticky?

These are the target sizes for NRA High Power and Service Rifle competitions. I tried to put the info in columns so that it would be easy to read with the rings in the aiming black on the left and those in the white on the right.

4.2 100yd Targets
(a) NRA No. SR-I Reduction of the SR Target for use at 100 yards to
simulate the 200-yard stages of the National Match Course.
Aiming Black_(inches)_____Rings in White_(inches)
X ring--------1.35_______________8 ring------9.35
10 ring-------3.35_______________7 ring-----12.35
9 ring--------6.35_______________6 ring-----15.35
___________________________5 ring------18.35

(b) NRA No. SR-21 Reduction of the SR-3 target to simulate the
300-yard stage of the National Match Course at 100 yards.
Aiming Black-(inches)----Rings in White--(inches)
X ring---------0.79 __________ 7 ring---------8.12
10 ring--------2.12 _________ 6 ring---------10.12
9 ring---------4.12 __________ 5 ring---------12.12
8 ring---------6.12

(c) NRA No. MR-31 Reduction of the MR-I target to simulate the
600-yard stage of the National Match Course at 100 yards.
Aiming Black--(inches)--Rings in White--(inches)
X ring----------.75 ___________6 ring---------7.75
10 ring--------1.75__________ 5 ring---------9.75
9 ring---------2.75
8 ring---------3.75
7 ring---------5.75

4.3 200 Yard Targets
(a) No. SR Military "Target, Rifle, Competition, Short Range."
Aiming Black-(inches)--Rings in White-(inches)
X ring--------3.00__________ 8 ring--------19.00
10 ring-------7.00 __________ 7 ring--------25.00
9 ring-------13.00 __________ 6 ring--------31.00
_______________________ 5 ring--------37.00

(b) NRA No. SR-42-Reduction of the SR-3 target to simulate the 300-
yard stage of the National Match Course at 200 yards.
Aiming Black-(inches)--Rings in White-(inches)
X ring---------1.90 _________ 7 ring--------16.56
10 ring--------4.56 _________ 6 ring--------20.56
9 ring---------8.56 _________ 5 ring--------24.56
8 ring---------12.56

(c) NRA No. MR-52-Reduction of the MR-1 target to simulate the
600-yard stage of the National Match Course at 200 yards.
Aiming Black-(inches)--Rings in White-(inches)
X ring---------1.79 ________ 6 ring---------15.79
10 ring--------3.79 ________ 5 ring---------19.79
9 ring---------5.79
8 ring---------7.79
7 ring--------11.79

(d) NRA No. SR-5-Same scoring ring dimensions as No. SR Military
with scoring rings through 7 only; paper size 28 x 28 inches. For use
at 200 yards on ranges with small target frames.

4.4 300 Yard Targets
(a) NRA No. SR-3-Enlarged aiming black for use in 300-yard rapid fire
matches only. Scoring rings the same as the SR target, with the 8-ring
in the aiming black.
Aiming Black-(inches)--Rings in White-(inches)
X ring--------3.00 _________ 7 ring--------25.00
10 ring-------7.00 _________ 6 ring--------31.00
9 ring-------13.00 _________ 5 ring--------37.00
8 ring-------19.00

(b) NRA No.MR-63 Reduction of the MR-1 target for use at 300 yards
to simulate the 600-yard stage of the National Match Course.
Aiming Black-(inches)--Rings in White-(inches)
X ring---------2.85 ________ 6 ring---------23.85
10 ring--------5.85 ________ 5 ring---------29.85
9 ring---------8.85
8 ring--------11.85
7 ring--------17.85

4.5 500 Yard Target
(a) No. MR-"Target, Rifle, Competition Mid-Range." Used in 500-yard
matches only.
Aiming Black-(inches)--Rings in White-(inches)
X ring--------6.00 _________ 7 ring----------36.00
10 ring------12.00 _________ 6 ring----------48.00
9 ring-------18.00 _________ 5 ring----------60.00
8 ring-------24.00

4.6 600 Yard Target
(a) MR-I1 target-Enlarged aiming black for use in 600-yard matches
only.
Aiming Black-(inches)--Rings in White-(inches)
X ring---------6.00 __________ 6 ring--------48.00
10 ring-------12.00 _________ 5 ring--------60.00
9 ring--------18.00
8 ring--------24.00
7 ring--------36.00

4.7 800, 900, and 1000 Yard Target
(a) NRA No. LR--
Aiming Black-(inches)--Rings in White-(inches)
X ring--------10.00 _________ 7 ring---------60.00
10 ring-------20.00 _________ 6 area--------72x72 square
9 ring--------30.00
8 ring--------44.00