I'm sitting here, shaking my head.
You don't need a magnum rifle, you just need to learn to be a better hunter. Shooting 500 yards does not make you a good hunter, just makes you a shooter.
You need to learn how to deal with nature and if you do not get them today, to go back tomorrow and try harder.
Hunting in my opinion is a up close and personal sport.
If you cannot get closer then 150 yards to a deer, you are not a deer hunter. You don't need a cannon to shoot a deer. There are thousands of 12 year old and younger kids in Pennsylvania who shoots deer with a .222 Remington, 30-30 Winchester or .243 Winchester with no problems. So why can't you?