I have shot smallbore rifle and 10 meter air
pistol for many years.
This scoring tool is invaluable for checking
those "close shots" I used the scoring
plugs for a long time, but have not used
then since I got this tool about 10 years
ago.
http://www.championshooters.com/store/product.php?productid=541&cat=254&page=1It has etchings for .22 and .177 cal. simply place over the shot hole
and center the etching over the hole. Even when using
round nose pellets it is very helpful.
The nice thing about these is they do not deform the holes
like a plug does. A plugged hole is best checked when plugged
only once. That is why in the benchrest rules they state that
it can only be plugged a second time if there is a challenge.
The benchrest matches that everyone on the forums have
been talking about lately is scored using a .22 cal plug
because that is the largest cal you can use in the matches.
This tool is very handy for scoring .177 hits to .22 cal
limits. The .22 cal etchings has a smaller circle in it
that lines up very nicely with a .177 hole.
This is useful in .22 cal smallbore matches because
the round nose bullets that are used allows the
target paper to close up after it passes through.
Just as a diablo pellet does. This will be very handy
for scoring your practice targets.
Here is a pic of the tool scoring a .177 cal hit.
If this was scored as a .177 it would not be a ten
scored as a .22 it will. This is a 10 meter pistol
target, just used for illustration.
Using the .177

Using the .22 etching (sorry the optical magnifier shifted as
I held the camera to it, this would score a 10 if scored as
a .22 cal)
