My Extreme is good to at least 250 yard. A load i had good luck with is 110g Blackhorn Powder, 300g 44 caliber XTP, smooth green Harvester sabot, W209 primer. When i first shot this rifle, i was disappointed in the accuracy. Glass bedding, seemed to make a very big difference. Oh, and i always use the bare primer plug, and adapter.
Cleaning the rifle is no hassle.
When i shoot the rifle things generally go smooth with no issues.
Trying to use regular scopes with them fancy reticles just frustrated me; they are set up for much faster velocity than the 1925 fps, i get out of mine. The scope on the Extreme now, is a 1.5-5 VX3 that was purchased from Leupold Custom Shop with a CDS dial modification. When i shoot 250 yard, i twist the elevation dial to 2.5, and have at it; it works, yes it does.