Ok so ever since I got my TBAC 30P-1, I have been wanting to try it out on my Savage 110 BA .300WM. Well I finally got around to removing the factory brake and screwing on the can. This gun normally shoots about .75 MOA or so with the brake at 100 yards. Well after screwing the can on and shoting it at 100 yards to see what kind of POA shift I may have, I discovered that it will not shoot minute of pie plate ( hardly keeps all 5 shots on a 8x11 sheet of paper) with the can on. After a little investigation I have come up with this. I think that I am not getting a good tag on the shoulder of the barrel. Here is why I think so. There seems to be some sort of spacer or something that I think is effecting good contact. Below is a pic of what I am talking about. So my question is am I correct that this is some kind of spacer and can it be removed. Also does my thinking sound correct as to why the accuracy is so poor with the can on. Thanks.