I have had a Uniflow measure for 40 years. Got a second used lately and one stays large chamber and one small now.

I would not be without them but I also have a Lee perfect measure for large stick powders that the Uniflows do not like.

I also tap twice at the top of the stroke but also twice at the bottom.

For serious loading of rifle stick powders I throw the charges onto a 304 Dial a Grain and trickle up to weight. Only takes a bit longer.