Rebarrel Remington 700 BDL?

[RowdyYates]

I bought this rifle in the 70's and have used it to shoot a lot of animals. It's a .270 Win. and I believe is a 1:10 twist. It still shoots into an inch at 100 but I'm thinking about rebarreling to get a threaded barrel for a suppressor. I mainly use it for Pronghorn, deer, coyote, hog, and perhaps Black bear. Spot and Stalk is my main hunting method but I also do some stand hunting. I shoot a lot of 130 and 140 grain bullets (Nosler Ballistic Tips, Partitions, Accubonds, Sierra Game Kings, Hornady Interlocks, etc.)

What twist rate would you all recommend?
What barrel length?
What make?
How much?

Thanks,
Dave