Maybe these pics will help make it clearer:
Brass punch and Sportster rear sight:
I think the printing on the pic below may be too small to read (at least it is for me!) Anyway, what it says is:
"Tap at this point with the brass punch" (arrow indicates that point)
"Tapping here will move the sight (and the group) to the left - it is not necessary, but it wouldn't hurt to take the elevator out before tapping.
Like Georgian said above,
The elevator ramp will not impede the drifting of the rear sight base, but you may want to remove it while you are tapping so that it wont stratch the top of the barrel when you are drifting the sight itself. Gently, or using force 'as required' tap the end of the brass punch with a mallet. This is, as previously mentioned, a trial-and-error method. Each time you move the sight, it will be necessary to shoot the gun again for feedback on whether it was moved sufficiently. If you can do it at the range, it would definitely save some fussin'
THIS ADDED:
I forgot to mention (and this is learned from experience
) one should apply a small piece of tape across the barrel in front of the sight and make a mark where the pointy end is before starting to tap it... otherwise you won't actually know if, or how much the tapping moves the sight.
Cheers
Kerry
p.s. it seems this 'Walmart' thread has been 'drifted' into sight adjustments...
oops!