Welcome to the home of longrange shooters. [img]images/icons/smile.gif[/img]
I shot a 22-250 for many years while hunting Pa groundhogs. For shooting longrange it is hard to beat the 55gr poly tip bullets @ max velocity. Nosler, Hornady and Sierra all make them and I'm sure that you can get one or more of them to shoot in your rifle. Custom match bullets may provide you witha slightly higher BC and a little less wind drift. In a factory rifle they may, or may not, shoot more accurately.
The 60gr bullets often will not shoot well in many factory 22-250 rifles. A faster twist is generally required to stabilize these long/heavy bullets.
Frankly, IMO you are at the outer limits of the 22-250 when shooting at 450yds. Beyond that is where the 6mm's really begin to shine. Here, 70-90gr .243 varmint bullets perform much better than anything you can shoot from the 22-250.
Doping the wind is without a doubt the most difficult problem for a longrange shooter. Bullet drop is very predictable and consistent, but windage considerations are always variable and changing. It takes a long time to learn how to read the wind over a long distance and even longer to apply the proper amount of kentuky windage. It is often this very skill that separates the "men" from the "boys" in the loooong range game.
I have been shooting for MANY years but still consider myself one of the "boys". [img]images/icons/grin.gif[/img]
Spend some time here reading and learning and you will become a much more knowledgable long range shooter.
This is where I calculate my bullet drop and windage -
[ 03-04-2004: Message edited by: Varmint Hunter ]