We are shooting at 50 feet using our regular ASSRA or WSU gallery targets.  Back in the gaslight days, the indoor gallery range was 75 feet.  What size were the individual bulls on their targets?  Were they the same size as the bulls we are using at 50 feet?

I think you will find that the 2" black is for 75 YARDS. For 75 feet the bull should be ~ 3/4".

Rn = [(Ro + Bo) * Dn/Do] - Bn

Where (assuming leading edge scoring):
Do : Original Distance to target
Bo : Original Bullet diameter
Ro : Original scoring Ring diameter
Dn : New Distance to target
Bn : New Bullet diameter
Rn : New scoring Ring diameter 

ex: 22 Ring with 32-40 @ 200 yds (600 ft) vs .177 @ 50 ft

[(6+0.321)*50/600]-0.177 = 0.350" for a 22 ring at 50 ft.
Charles

ASSRA 50 Foot Rimfire Targets, 5 bulls plus sighter ... 100 for $15.00
Contact Target Manager Jeff Ehrlich at jeffer1942 or
(847) 831-5800

If you scale it directly you miss the effect off bullet diameter on scoring. The true measure is the radius of the center of the bullet as a measure of deflection from exact center. Imagine a 1" bullet at 200 yds that touches a ring of 11" diameter would touch the exact center of a 50 ft target. On the 50 ft. it would score an X while the 200 yard would score an 18. If you do not include the bullet size you are kidding yourself if you reference your score to the 200 yd. matches.  Granted your aperture size will need to change to get the same sight picture.

Charles

So when we shoot with a .22 rimfire at our standard 200 yard target, we are getting a break?  We should reduce the width of each ring?

Thanks to Dave Arawinko, I just received an original gas-light era 25- to 19-ring gallery target in the mail.  The 25-ring measures 0.487" with my Starrett dial caliper.  It is visibly less than 1/2" on an architect's scale. The black goes to the 20-ring and is 1 and 15/16" in diameter.

For what it's worth. I have sample 50 ft. targets that were distributed by The Schuetzen Association of Lakewood, Ohio in 1938.  The entire target is 3" in diameter; the scoring rings are 1/8" wide and are numbered 14 through 24; the bullseye is white, numbered 25, and is 1/4" in diameter; the black center encompasses rings 18 through 25 and is therefore 2" in diameter.  Only 50 FOOT TARGET is printed on the target; but given the scale, I can't imagine it was intended for other than .22s, and even those must've made scoring arduous.

Also, since I've brought it up, I have newsletters from this association which by their content and format suggest that if the organization was not the parent of the ASSRA, its newsletters almost surely provided Gerald Kelver with a model.

Bill Lawrence

Since everybody uses the same 50 foot target it should not make any difference.   
If you are trying to figure what your scores should be at 200 yards from the 50 foot target you are in for a rude surprise.

mes wrote on Mar 2^nd, 2016 at 6:21pm:


Think WSU targets are bigger. Have to use a larger aperture anyway. 

WSU? 

       Joe.