Sighted the 10/22 in at 50 yards using CCI and Hornady.
Using the third dot down from the cross hairs it was almost on at 100 yards.
Both grouped about the same at 100 yards. The Hornady shaded to the left and CCI to the right.
The CCI was from the trays and the Hornady from a paper box. These difference are similar to using CCI in paper boxes.
Heavy rain at times but little wind. Groups at 100 were probably a little over 2" which is about what should be expected from a 10/22.
Will test again under better conditions.
Good conditions yesterday so went out to test at 100 yards.
Hornady: 3.6", 2.29", 3.25", and 2.54
CCI SV Tray: 1.56, 2.55, 1.21 and 1.75
CCI SV boxed: 1.57, 1.85, 2.23 and 1.95
Remington Target . . . pretty hard to measure 5 shots when one was consistently off the paper!
Accuracy wise I don't see much similarity between Hornady and CCI.
The CCI results are fairly consistent with Rimfire Central results where rifles show a preference to one or the other.
Rifle was a Ruger 10/22 with a Bushnell 4500 4-16 at 16X.
CCI Box was best at 50 yards, and all would be good grouse loads at 25 yards but the Remington was still questionable and the poorest at all ranges.