By brush gun, what do yall mean?
I hear it, I THINK I understand, but then I think back to how I personally hunt....
I can shoulder and with an appropriate powered scope, get on and animal just as quick as if I had iron sites. Once I'm up and on the animal, I'm going to settle in and make sure I'm on my spot. I don't just throw up, and pop the shot. To me, the scope might be a little slower on the draw, but the iron sights takes me longer to "settle" and make sure I am lined up vertically and horizontally with the front and back sights, where as once I am on the animal with the scope, the cross hairs takes the up down left right allignment out of the equation. I'm either on or Im not. I like iron sights, don't get me wrong, but I am much more thorough when shooting them for a precision shot like taking an animal, rather than plinking 2liter bottles or something.
I dont shoot THROUGH brush. I wait for an opening, so the heavier bullet through the brush thing makes me wonder?
Chances are, if it's thick brush, I aint walking far, I'm getting to my spot and parking it, weight isn't an issue.
No matter what I shoot, I make sure I have an appropriate back stop that is clear of dangers.
Now, what are the advantages of the 30-30 in that situation, over the 243? (don't shoot me, I still LOVE my Win 94. and bring it along to eat with the "big boys")