That's not much of a long post.
Accuracy has several components but the chief one resides between the ears of the shooter, or so Eddie Harren told me.
So my advice is this.
Learn to shoot accurately. Half MOA is a good number to stay around. I don't shoot much better than that and often times worse. Practice with your Anshultz. That is great practice. Act stupid and shoot it out to 450 yards. You will learn something- once you know your rifle and its bullet you can do great and wonderful things with it. The key is "understanding". That makes or breaks a lot of people. If you can't hit a target at 450 yards with it swap it for a bag of beans and hoe and take up gardening because you don't got what it takes between the ears.
Finally, we will discuss the centerfire, 450 yards is a trivial trip for a 270. It is only the lack of understanding between your ears that is causing it to seem a long ways away.
Anyway, welcome and it is good to have a small bore competition shooter on the the forum. Stick around and learn what there is to learn. It is amazing what other people know.
The Smokin Fur Rifle Club