An interesting scenario could be considered. To consider the use of different era battle rifles against each other.

How would good hardy good shot soldiers or warriors familiar with bolt action rifles fare against modern semi auto or full auto rifles?

Not a scenario needing imagining. As it happened.

In the early days of the Soviet invasion of Afghanistan reporters detailed how the prized weapon of the Mujahedeen fighters was the .303 SMLE. It could be used to snipe the Russian invaders from the hill tops and sides. The Russians of course armed mainly with 7.62x39 Ak-47s.

Now track forward a few years, and all the Mujahedeen were armed with Ak-47s as well. Captured from the enemy. The odd old SMLE might still be in rare use.

So the romance of the SMLE "sniper" rifle did not last long compared to the modern full auto assault rifle.

NOTE: this assumes ammo supplies of .303 ammo was not also part of the equation.