I realize we are reviving an 8month old thread but my experience had prompted me to chime in.
Radial brakes are NOT where it's at for hunting, the vast majority of LR shots, hunting or otherwise are taken from the prone position. Radial ports blow crap everywhere & I mean EVERYWHERE. My partner has a Vias styled brake on a 300RUM.... poor rifle looks like it had been stored in the back of a gravel truck every time he goes to the range & that's not including what he's wearin'
We could also discuss the ports in the front of the brake, those cannot be condusive to accuracy. I really don't think additional forces on the base of the bullet as it transitions from barrel to atmosphere is even a decent idea; too many x-factors there.
The side discharge brakes don't blow crap all over the shooter & his rifle, don't add disturbance to the bullet as it transitions to the atmosphere & usually incorporate angled ports to increase effectiveness.
For this debate, Muscle Brake all the way.