Yes, Sinclair sells a bore guide for 308 Encore chambers. Yes, the cradle is awkward, but it works, mostly. For cleaning I generally use a Patchworm rather than a brush and rod. There's no way you can do damage with one and they do a great job. I use Montana Extreme for the quick jobs and Wipe Out when I have at least a couple of hours for it to work. One other suggestion, you might want to shoot the 308 in the Encore a few times before you make a purchase. Although the 308 certainly isn't a hard recoiler, it can be stiff in this light rifle. A 260 Rem may do a better job for you. With either cartridge you should expect 1/2 to 1 MOA. I have had a 308 and currently hace a 260, both 22" barrels. Both would shoot under 1/2" with handloads. The 260 is the most accurate T/C barrel I've owned.
Rick
