Rear bag for bench rest?

Edgewood makes great rear bags and they will build bags to order. For BR and F Class an angled rear bag works very well by providing a spot for your trigger hand to rest. I have a number of their rear bags and they are great people to deal with and even better they are located in New Mexico :)
 
If you mean BR or F-Class, call Protector and tell them exactly what rifle/stock you're shooting and they can tell you which of their 1000s of bag options will work the best for you. A great company to deal with.
 
i use my small rear tab bag as my main rear bench shooter but call me crazy, but i tried using my reasor game changer bag as my rear bag one time, super steady and dual purpose.