Many many thanx for such an informative reply.Yeah,a bolt action weapon is obviously more accurate and has more range because the whole energy from the gas is used to propell the projectile where as in a semi automatic weapon,some of the energy is diverted to rotate the bolt,hence lesser range and accuracy.Actually,I have a cousin who is in 57th mountain division.He told me that the Dragunov SVD is not used by sniper teams but Designated Marksmans ,instead they use the Heckler&Koch SP66.
REGARDS. . . . . . .