Thanks, Bill. We initially had a problem with this rifle, in that it exhibited a wandering zero. The rifle made nice little cloverleafs while testing, but the cloverleafs were sometimes several inches away from the desired POA. These variations appeared to coincide with weather changes. Several fixes were contemplated, including using a barrel band to tie the front end of the forend to the barrel.

Then we noticed that the back of the forend was touching the front of the socket; it is supposed to have a clear sight-line from top to bottom, but did not. To correct it, we simply scraped the offending area until we did have a sight-line. Test firing reveals that the zero is holding steady, even after a recent episode of rainy weather. The problem appears to be solved.