Re: chambering help
most factory 30.06 barrels come with a 10 twist. When I got my PacNor, I got an 11 twist. I think the 11 twist is the perfect rate for a 308 and 30.06 unless you plan on using 220 bullets frequently.
Interesting selection between Shilen v. Bartlien. I have both brands. Good luck with your choice.
The largest bullet I shoot from my .06 is the 200 AB and I did that just for bait-n-wait bear hunting. The reality is you don't need to shoot any bullet bigger than a 180 unless you want to try the 185 VLD or 190 VLD.
I don't recommend a VLD on up close hogs but do for long range. Unfortunately, hunting is never a sure thing when it comes to distances.
I think a good choice to consider is the 180 Accubond. My .06 shoots them over 55.5 gr Re19 in Lapua brass and Fed 210M primers into 3 shot touching clusters more often than not. I killed a black bear in BC with this combo at 200 yards.