If you use the pointed tips toward each other, they may touch tip-to-tip, but you won't see if the individual centerline axes are co-linear. Having the large flat surfaces butted together makes this easy to visually diagnose. I actually learned this tip here on da 'Fire . . .
Not sure if I buy this or not. I suppose you could say both large cylinders must line flag against each other. But I am not sure how that would not be happening with the points, and easier to see.
Why do you think they come with points?
Googled to see if I being doing it wrong. But this seems to be something you learned here. Any articles? I read NRA and Brownells, which I am sure are fools.
