It can be a bit tedious to do. Holdin' the mirror, gettin' the right eye relief, allowin' enough light around the ocular to see clearly. Can't remember how long ago I found that , was on Leupold's site. Since then I use one of those polished stainless steel signal/survival mirrors for that purpose. I make note of the positions so if I have a mishap that may have caused a shift in the reticle , I have a reference.I guess you can center it up and bang it around a little and see if it stayed centered. Ive never tried the mirror trick.
I'm stealing this test.. good ideaI normally check my scopes by putting my barrel in my 5 inch vise and locking it all down tight. I sight it at a light pole across my field 250 yards away and then tap the barrel with my plastic mallet. If the cross hairs stays put I call it good. I personally have had real good luck with scopes holding zero.
The last entry by Wesg93 on this thread was Wednesday the 8th. Wrote that he was going to pick up some proper bore cleaner.I was just curious did the copper come out and the barrel get cleaned on this Browning? I have been watching this thread and have not seen anything on the barrel being copper free? As far as the Scope-- the jury is still out until the barrel is de-coppered.