You should be able to use Maxi-balls, as well as saboted bullets. You need to see how accurate they will be- the rate of twist may be wrong for them.
The .45 caliber bullet is not used in a sniper rifle.
The correct size of the bullet that fits the rifle.
A rifle that shoots a .22 caliber bullet.
That would depend on the caliber, and type of bullet, the rifle uses.
No. The bullet is too big. A 30-30 is a .30 caliber bullet. a .38 bullet is .357 caliber
The caliber of the bullet is 7,62 mm. And shoots the 7.62x54r ammo. That makes it a .30 cal.
Have it examined by a good gunsmith. This rifle use a .22 caliber bullet, long rifle.
Any bullet that has a diameter of one half inch is a .50 caliber bullet. There are different .50 caliber bullets- my Hawken muzzle loading rifle shoots a .50 caliber lead bullet, but different from the .50 Browning Machine Gun (that is also used in the .50 Barret sniper rifle)
that depends on caliber, bullet weight, powder type, amount of powder, the gun used and other factors.
About 3,400 yards.
@ 3 miles
It should be a #11 cap.