I do not know.
A 308 Mossberg MVP Flex is about 800$ in the US. + a 200$ scope should be sufficient (here you can anyways just get scope to about 400$. Rangefinder (basically any up to 1000 Yards will do it) are about 209$. Considered the gun you have anyways (regardless of factory ammo or reloads) the Long range Equipment costs you only about max 500$.
If you have an "high power" rifle a rangefinder you will have to have anyways. So basically there are no additional costs involved regardless you shoot medium range or Long range.