A good trigger like a RR greatly improves Offhand shooting and even helps benchrest shooting. With a good trigger, you will actually have fewer misses in Offhand. Doesn't matter if that Offhand happens on the range or in the field.
Every now & then I try to ignore it by fielding an AR with a stock trigger, even one that feels pretty good to me. It never works. I always end up replacing the stock trigger.
