Sounds like you used the loading manual as a receipe book. It isn't. It is a report on what someone else did with THEIR rifle. The assumption is that you will use that information as a guide to DEVELOP your own loads for YOUR rifle.
So first, you decide which brass, primers, bullet and powder to use. You have done that.
Then you decide what OAL to use. I choose between solid engagement into the lands (which you have done) or 20 thou off the rifling. I often try both to see which works best for that rifle. Usually I chose 20 thou off because it is more accurate and because there is no risk of opening the bolt and dumping all the powder into the action/trigger because the bullet is stuck in the throat.
Once you decode on whether or not the bullet should be in the rifling or off, you have to do some trial and error to find what that OAL is for your rifle.
Then you do your load development with various powder charges. With a new rifle/powder/bullet I would load 5 of each in o.5 gr increments from START to 1 gr over MAX and shoot these for groups to find the powder range worthy of exploration.
If I find pressure signs, I bring the rest of the hot rounds home, to be pulled.
To answer your question, you can shoot those rounds that engage the rifleing, so long as they don't show pressure.
If you have a decent quantity, take half of them and seat the bullet 30 thou deeper, and compare the two OALs for accuracy. It might be useful info.
