Are you wanting to shoot 400 to 600 yds competatively or just for kicks? Are you just getting started in rifle shooting?
If you are shooting 3 gun at targets that are human chest size it's one thing. If you are trying to keep hits inside a 10" circle with open sights at 600 yards its another thing.
The Model 1 upper lacks certain features you should have in a competative match rifle if you want to shoot tight (MOA or less)groups at 200, 300, and 600 yds with iron sights.
Features that would be desireable are match chamber and bore 1:8 or faster twist rate. Floated barrel, match sights that are adjustable in 1/4 or 1/8 moa increments. Match trigger.
If you don't need 6" groups at 600 yards then the Model 1 will probably do. If you are just getting started in competative shooting it may be a good starter until you are outperforming the rifle and need to move up. Model 1 uses E.R. Shaw barrels which are a high quality barrel for general use., but not quite match standards. (E.R. Shaw makes some great 10/22 barrels)