I think there is some confusion here.
The rifles woogie is talking about in post #123 were the Evol HPS that was produced like 5 years ago (I believe), they had a very specific barrel, that shot ONE type of slug well that nielsen no longer produces. I owned one of these rifles and it has absolutely zero correlation with the "new" rifles.
Back when I reviewed Toms personal HPS rifle that Woogie also had after me, that rifle had the new dwell time adjustment, external adjustable reg, new balanced valve, and cocking system that was it. From what I was told there would be a line of HPS rifles sold/shipped out that had old style barrels on them to get rid of inventory, not a bad thing, that rifle was very accurate, consistent , and efficient once I tuned it for 44.75s and it came in shooting hot at 110 fpe with 56 zans.
This new rifle appears to be all of what I and Woogie had with the exception of the balanced valve BUT the addition of a Sub MOA barrel. However it does not give any info on the barrel specs, and this is where I agree with
@Pumacarl , at the cost of these rifles, and the way airguns are going, barrel specs should be almost mandatory when producing an ad or write up for a rifle. To not include that info in the specs of the rifle in plain sight is pretty lazy.
In powder burners , you choose a round you want to fire, then build a rifle around it. The days of buying airguns and buying 40 different ammos to come up with something that is "Just ok" should be over.