i've never shot an ultralight ruger but i do have a model 7 in 7/08 and i agree that it is definately an adjustment compared to a full sized rifle!! i use an uncle buds bull bag so that really helps. i used my model 7 this fall and filled my tags but noticed that it is harder to shoot offhand when the pulse rate is up and winded, all the more reason to use a bi/tripod of some sort or a good walking stick!
Your comparing apples and pears . Not Ruger Vs Ruger .Some Remington Model 7's shoot good, some not, but it's an other matter
The ultra lites are fine if your going to make one or two shots . More than that they tend to heat up quick, and may also change their course of impact . When siting in allow ample time for the barrel to cool between shots.
If you like shooting at the range and firing a box or two over the day- you might enjoy the standard barrel a lot more .