Am wondering if some kind person can tell me how a tool manages to grip the smooth barrel nut on my new model 16 rifle. Thought maybe there are serations on the under side of the nut where I can not see but really have no reason to take the stock off at this stage and as the rifle is shooting really well do not want to disturb it? The other thing that has been bothering me is that if I have to take the Accustock off, will it be necessary to do a whole new round of load development when I put it back together? I love this rifle, have just shot 3 three shot groups with 100g Sierra handloads and they went .39", .5" and .3" and that is about as good as my 11lb heavy barreled .220 Swift can do and this one is just an 8lb hunting rifle in cal. 7mm/08. :) :) :)