Thorny,
The museum doesn't have/allow patterning boards.
Why do you think this is? I'll pass along a little tip that my "using battery" and I have learned along the way-the local range gets $2 a gun to use the patterning borads on site, cleanup is expected if you make a mess. Years ago, Mr. owner quit charging me, as he told me, "doesn't seem fair to charge you anymore, you've about paid for it".
A few of my guns were about perfect at the beginning. They aren't now. Neither am I. Life does that to us, my guns, dogs and I.
Get a life. Really, I mean that in the best possible way. Life doesn't need frozen ammunition. Or, a high condition gun.
Best,
Ted
