Crosman Premier domes-unexpected surprise

Spent a day out shooting with a GTA member today. I was shooting the Kalibrgun rifle. It's tuned to shoot JSB 18 gr pellets at 895 fps. It also shoot the AA 16 gr pellets great at 930 fps. Donny was shooting an AT44 long which is regulated about the same as the Kalibragun. He always shoot a lot of different pellets. I tend to stick to what I know work well. He shot a 50 yard group with the CP 14 gr pellets and it was pretty tight. I had some on hand too so decided just to try them. They shoot at around 950-960 fps so imagine my surprise when the first three went into the same hole at 50 yards. I went ahead and shot a 10 shot group and they were all touching. We set some K Cup coffee containers out to 80 and 103 yards and the CP were still stable and hitting them at these distances. They are only $8.99 for a 500 tin at Walmart shipped free to nearest store. From now on these are going to be my main plinking pellets in this gun.
 
Man that's sweet grouping on the CPD s.I can get them here at my local Walmart for 5.99$ :) but it's a different grouping story for my cricket carbine.: (
They shoot all over the place at 27 yards but jsb18 grain are spot on and she also likes 28.1 grain eujin pellets at 27 yards.I do think my carbine is shooting 18.1 jsb near the 1000 fps mark might be why the CPD s seem to fly all over the place when I try them.
I need to get me a chronograph.:)
 
I've always had good luck with the CPPD's in all of my springers. I guess they actually make two weights in .177- Ultra Magnums (10.5 gr) and Lights (7.9 gr). I've had my best groupings with the ultra-mags, but I have a couple tins of Lights coming for use in my lower-powered CO2 guns. Only one weight in .22, but they still label them Ultra-Magnum. Kind of strange, considering all of their lead diabolos weigh the same 14.3 gr (except Piranhas, but those are a joke).
I tried using the .22 Hollow points as a hunting round, but the combination of inaccuracy and minimal deformation led me to stick to the Domes.
I'm building a chop-shop .177 Crosman 2400KT that will end up being more of a Powerlet-driven SynthRod. Even uses Marauder mags. I'll try both of the Dome weights and see what it prefers.