No
You could build a rifle in .306" or any other caliber but you are likely referring to 30.06. A 30.06 rifle is referred to as "30 Caliber" but to be accurate it is nominally .308"
NO. There is a 30-06 rifle, but it is still a .30 cal, just like a 308 or 30-30 If there were, it would not be a rifle, it would be more like a cannon.. The caliber of a rifle, is based on size of the hole in the barrel, hence .50 cal is = half a inch. and a .30 is just slightly smaller than 1/3 of an inch. ****************** While there are .307 caliber rifles, have not seen a .306 or 306- as the previous responder noted- there IS a 30-06 (Usually pronounced thirty ought six). Yes there is. It is a 7.5X55 Swiss rifle. The surplus ammunition bullet diameter is .306.
a .22 caliber
A .177 caliber air rifle has very little recoil.
.223 caliber or 5.56mm.
Yes, I can. A Barrett M107 is a .50 caliber sniper rifle.
The Dragunov (note corrected spelling) sniper rifle is in caliber 7.62x54mmR. This is the same caliber at the Moisin-Nagant 91/30 rifle.
50 caliber
value of a model 49 ithaca 22 caliber rifle
No
You will need the services of a good gunsmith.
No
A rifle that shoots a .22 caliber bullet.