My experience loading precision ammo says the same. I wet tumbled with stainless steel and had to lube necks to get consistent seating pressure. Velocities were never as consistent as they are now. I simply use a vibratory tumbler with medium grain sushi rice.
I have been able to load many sub .3 moa loads with lee dies on a Lee press with good components. Leaving a little carbon in the neck, bumping shoulders .002-.003 with a FL die, lubing cases for sizing with lanolin mix, and using quality components makes life pretty easy. I also anneal every 3 firings, but I mostly do that for the life of the brass. I'm not sure it matters for that ki d of accuracy as long as the cases have the same number of firings on them. I do drop charges on an autotrickler, but also had loads that shot very well before it was a thing.
Everyone tries to make reloading complicated and need to cost $20k. While all of that can make it more enjoyable, and is likely necessary to win in benchrest and f class at the highest levels, getting sub 1/2 moa accuracy at close and medium range is very simple.
A concentrically chambered barrel and a load put together with Lapua or petersen brass and berger bullet and the above methods will be the easy button to sub .5 moa loads. It likely won't shoot in the zeros, but most on here aren't after that kind of accuracy.
All the guys that are against wet tumbling with stainless media are saying, is that it undermines the efficiency and simplicity of achieving the above. When I tried it my loads performed noticeably worse. It wasn't horrible, but it was noticable. I could not figure it out until I went to a vibratory tumbler (I didn't tumble at all before that and also had good results).
It has been discussed to death. It is possible to achieve great loads with great accuracy while stainless tumbling. It just makes things unnecessarily difficult.
