303
Not enough sales
http://www.e-gunparts.com/product.asp?chrProductSKU=PDF0546
Have you tried a google search?
The "77" in Ruger 77/22 refers to the model designation of the rifle, indicating it is part of Ruger's 77 series, which includes various firearm models. The "22" signifies that the rifle is chambered for .22 caliber ammunition, which is commonly used for small game hunting and target shooting. This model combines Ruger's traditional design elements with a focus on versatility and accuracy in a .22 caliber firearm.
Your winchester model 77 rifle is valued at between 75-175 dollars depending on overall condition.
The standard caliber of a biathlon rifle is .22.
Blue Book of Gun Values has sn data. Also, proofhouse.com
a .22 caliber
A .177 caliber air rifle has very little recoil.
.223 caliber or 5.56mm.
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"
Yes, I can. A Barrett M107 is a .50 caliber sniper rifle.