I find it only to be slightly stronger for the slow rate of fire. It does feel similar in functionality but the behavior is different due to the recoil angles.
What i suggest to make Felix more unique between MOA.
To differentiate, this is a long range rifle, 79 damage on body hit. Instant death and gib on head shot.
But to comp for its extreme power in the lethal hands of high skilled players. You cant optimally shoot fast or get many rounds off with extremely slow bolt cycling and rate of fire. As a consequence perhaps lower the mag cap to 5 with a total of 15 rounds.
You can still quick Scope and quick swap, but if you miss the head, you are dead.. Where MOA you can get another shot or even two more off while strafing.