My 1974 336 in 30-30 Winchester has the original iron sights installed. The front is the "hooded version with the vertical "i" post inside and the rear is the adjustable ramp style. I find that over 75 yards out the front post is so large that it literally covers up a 6" diameter area and I would like to get proficient at 100 yards. At 100 yards the sight appears to cover up such a large area downfield I don't see how I can aim with any accuracy. There are a lot of sights on the market so I thought I'd ask the combined knowledge of the forum what exact brand of iron sights you might recommend to help me with this problem. The front sight is now attached with 2 screws and the rear sight is a dove tail fit. Thanks...