The 30-06 is probably the most versatile caliber ever made because it’s been around the longest 200 grain partitions shot out of it will have no problem whatsoever taking down any size animal out to 400 yards
You can Call Swift the man that does the bullet there will talk to you in length I’ve talk to him several times and he will lead you in the right direction
Way to far. A rifle barrel shoots best with fouling in it. When finished shooting for the season clean it like you always did and put it away. After next shooting use a bore snake with a little oil on the end of it. Done.