If you want a new rifle, why not just buy one if you can afford too? Id be the last guy to suggest buying a new rifle is not a good idea.
but that being stated...from my experience ,theres not enough real effective difference in the actual field results I've seen on game (mostly deer and elk)
over 45 plus years of hunting, between a 30/06 vs a 300 mag
too make buying and using a 300 mag ,vs using your current 30/06 a major improvement.
a 300 mag pushes the same bullets maybe 300 fps faster or allows a heavier bullet to be pushed to similar velocity.
a 30/06 with the correct ammo kills elk very effectively,
its shot placement not power thats the major factor in lethality, and despite what you see in magazines,
most deer and elk are killed at under 300 yards,
you might be better served with a high quality scope, upgrade.
https://www.midwayusa.com/product/13...-16x50mm-matte
if your looking to upgrade the rifle hitting power, a 338 win with a 250 grain bullet, or a 375 H&H with a 270 grain bullet makes more sense.
while the paper ballistics may not show the increase very effectively, a premium quality a 250-270 grain bullet hits noticeably harder and penetrates well,
something that the lighter 30 ca;l may not always do, nearly as effectively, but again,
its shot placement not power thats the major factor in lethality
,and a 30/06 with a premium 180-190 grain bullet will kill any elk in skilled hands with good shot placement.
http://www.handloads.com/loaddata/de...?Caliber=30-06 Springfield&Weight=All&type=rifle&Source
http://www.handloads.com/loaddata/de...sp?Caliber=300 Winchester Magnum&Weight=All&type=rifle&Order=Powder&Source=
http://www.handloads.com/loaddata/de...sp?Caliber=338 Winchester Magnum&Weight=All&type=rifle&Order=Powder&Source=
http://www.handloads.com/loaddata/de...sp?Caliber=375 HqqqH&Weight=All&type=rifle&Order=Powder&Source=