Bill: you didn't happen to mention anything about familiarizing yourself with the 1911 or firing or handling it before attempting bulls eye shooting. You also didn't say anything about the ammo you were using. Did the local bulls eye shooter fire the pistol and provide you with a target or did he give you his personal opinion based on his knowledge of the builder??
A Ruger MkII, even a Govn't Model with a bull barrel, is good practice but it is in an entirely different class of pistol than the 1911 even though both may be used for the same purpose - target.
I would bench it and see if it shoots accurately with the ammo you are using. And I would shoot it a bunch, and from different positions and get familiar with the pistol before reapproaching a target stance. If it's not accurate with established match loads then it may be in need of a tuning. If this is/was a well used match pistol it could easily have tens of thousands of rounds through it and still look great but not shoot all that great. Most guys I know don't let go of a match piece unless it doesn't match their expectations any more.
Recoil - might have a light match recoil spring in it. I don't know that builder, when it was built, what weight recoil spring it employed when built or how many rounds are on it. Lots of possibilities. Again, the more you can familiarize yourself with this particular pistol the better you should be able to shoot it. And you might need a new recoil spring when you tune it.
And, of course, we are always here to help you..........
Did I fergit to offer ya to send it an alla yor boolets to me fer testin'
??