I am considering the purchase of a rifle with factory original Mag-na-port slots in the muzzle. It is a Mauser 03 in .416 Rem Mag,. Less recoil and muzzle flip would be a benefit, but I strongly dislike any increase in muzzle blast and have removed any muzzle brakes that were installed on my hard kicking rifles in the past. I'd rather deal with recoil than the increased ear damaging noise. I only shoot while wearing muffs or plugs but still notice the difference with braked rifles, and bystanders may not be wearing protection. In addition, this rifle will be used on Safari and many African PH's dislike muzzle brakes and ask clients not to show up with a rifle so equipped. So I need your advice. Does a rifle with Mag-na-port slots increase muzzle blast noticeably like a screw on brake does? Difference for the shooter and for the bystander? Your experience appreciated.