I am building a rifle, but the question concerns shooting. The rifle is Tennessee style, and therefore has a good bit of drop, so my eye aligns nicely with the barrel when it is raised. I can't see very well and am considering making a dovetailed aperture sight and installing it just in front of the internal portion of the breechplug. I think I can align the center of the aperture with the top of the front sight, mostly by carefully measuring the barrel cross section and determining the line of sight (as I normally do with a regular open rear sight). The front would be left a little high so it can be sighted in by filing it down. The rear aperture will, of course be adjustable only for windage. The question is this; do any of you shoot with a rear aperture sight and a flat topped post front sight? Our normal blade front sights appear from the rear to be a flat top post, even though they look like a traditional longrifle sight from the side. If anyone shoots this type of rig, how does it work?