I suppose you mean: What is a 30 caliber bore? The bore of a Rifle is referred to as the caliber, which equates to the diameter of the bullet it fired. A gun that shoots a 9mm bullet would be a 9mm caliber or the bore size. Most guns originally made in US were measured in INCHES. Thus a 22 caliber rifle was a gun that shot a 0.22 inch diameter bore. Since the US Army began to change over to the metric system, it began making guns to the 9mm and 7.62mm sizes. Some bores can have alternate names. A new pistol bullet is the 0.40 INCH caliber designed by Smith&Wesson is also referred to as the 10mm caliber. The bore size of Shotguns are measured using Gauge. For example, shotguns are referred to as 12-Gauge or 20-Gauge. Gauge is an unusual measurement. The gauge equates to the number of lead balls that are made to the diameter of shotgun's bore and totals a weight of 1 pound. Thus, a 12-gauge shotgun has a diameter that of a ball that would weight 1/12 of a pound. That means the Larger the bore of the shotgun, the smaller the gage number. A 12-gauge shotgun is bigger bore than a 20-gauge shotgun.
Stevens 30 caliber rim fire is not a true 30 caliber. Chamber is .296. Bore .270 t0 .277. I found a 30 caliber rim fire round, at a gun show. It did not measure out to a 30 cal. Shot shooter
120-200 dollars for a rifle with between 60%-90% of its original finish remaining,and a good bore.
it is probably a 30 cal luger, which is a bottle neck cartridge.
Air Rifles come in several different bores. .177, .20, .22, .25, 9mm, 45 Cal, 357, and 50 Cal. Big bore usually refers to the 9mm, 45 Cal and 50 Cal. These rifles fall into the PCP class of Air Rifles.
175-300 dollars.depending on the overall condition of your rifle,and a good bore.
A small block Chevy has a 4inch bore. When you bore one 30 what you are doing is removing .30 thousandths from the cylinder. That would make the bore 4.030 or turn a 350cid into a 355cid.
Your Winchester model 1894 rifle which was made in the year 1979 will bring between 200-350 dollars depending on the amount of original finish that remains,and a good bore.
it is a 30 cal. rifle
Depends on the load
You can do this by miking the bore of the rifle,if you do not feel comfortable doing this you may have a qualified gunsmith do this for you.Most 25 cal bores are .257 diameter,the 32 cal bore may be .321 or smaller depending on what caliber it is chambered for.
stock bore is 4.32 inches, so 30 over would be 4.35 inches
a 30-cal rifle or sniper rifle. closer to 30-cal