last summer I purchased a muzzle brake, that has for the lack of better words, has a "tin can" around it, that pushes the gasses forward. away from the shooter. in this respect, it works well. the amount of blast that I experience is cut more than half. anyway, my question about the "brake" part of it, is that the vents going out the side are 2 different sizes. .093" holes (4 rows) nearest the breech, and .177" holes (3 rows) furthest the breech. I am guessing that the reason for the smaller holes is to limit how much gas enters the closed off end, and the larger hole to actually try to make the brake work. I guess it's a cross between a muzzle brake and a linear compensator? so my question is why the different sized holes?