Exactly. I think people like to spend money because it makes them feel like they are getting more accuracy. Unless u are shooting for extreme accuracy, the average shooter will not see the difference. I think it's more of sense of satisfaction foe some to spend money. To me the cost to potential improvement (or not) is not worth it.
I may be biased ... My 6cm rpr shoots as well. Everything I shot was well under sub MOA. I settled on Smks at a touch under 0.5 on the 6x5
Well, it really comes down to that (what I've highlighted). . . doesn't it? Different people have different standards they want to hold to and what they can afford. The RPR target market seems to be those who have a limited budget AND a desire for more precision than one can get out of a standard factory gun. Then there are those who want just a little more, without having to go to financial extremes. I feel I land kinda in the latter, where my factory RPR barrel (in .308) was doing just fine giving me just a little better than .5 consistently. However, I wanted something more like .3 and I figured the only way I was going to get there is with a barrel upgrade. BUT. . . I wasn't just going to throw out my factory barrel out of the gate. Since I was new to precision shooting, I used the factory barrel to learn what I could and as I almost got to 4,000 rounds, I decided it was time to swap the barrel out for a better one (it was at the time of the birthday anyway ) and not that I was losing any accuracy at the time. Well, the new barrel gives me exactly what I was looking for in accuracy . . . AND, is giving me other benefits: as in higher MV's for the same loads, larger accuracy nodes, easier cleaning. So, for me the cost was well worth it at that point in time and I've got a gun for well under $2,000 that got me to where I wanted to be. If I wanted to shoot in the .1's, I would expect to have to spend a lot more on a custom gun with much better glass.
With a 6.5 or a 6 the barrel life will be much shorter than with a .308 and one of the reasons I went with a .308. So, with one of those, one will be spending the money on a new barrel before long anyway.