Scopes, Railings, and Options Idea...

[Lord Azagthoth]

I would give a Scope above x20 a penalty due to the fact that the shooters will see their own heartbeat and they have to time their shots in between.

In a competition, you wouldn't have to switch to your separate range scope to see where you hit the target but can see this through the rifle's scope. This could mean a bonus for consecutive shots because you can maintain your position and fine-tune your next shot.