So I finally got around to doing some testing ( you know retired guys are busy ) anyway Wednesday morning it was beautiful +16 and for a change no wind here, grabbed a couple 22's those being a CZ 457 with 24" sporter weight barrel and a Christensen Arms Ranger with an 18" carbon fiber barrel, dug through my stash of 22 ammo and headed to the range.
Below you will find the test results, data was gathered on a Garmin Xero C1 Pro, all data is the average of 3 x 5 shot groups at 50 yards, I had read in the past that 22 LR achieves max velocity in 18" barrel, some say 16" anyway the chart below just confirms that, in fact in some case velocity was a tad higher out of the 18" CA than out of the 24" CZ. of course the CA Ranger is said to have a match grade chamber which may or may not make a difference. One other thing that I have know for some time now from shooting my long range centerfire's is that the lowest ES and SD is not always the most accurate load, again this is shown below.
Ammunition Brand CZ 457 24" Barrel ES SD Av. Group" Best Group"
Fed 36gr HP Blue Box 1263 49.6 15.7 0.988 0.791
Rem Cyclone 36hr HP 1309 36.8 12.9 1.211 0.867
Fed Auto Match 36gr hp 1296 24.7 8.8 1.112 0.899
Am Eagle 40gr RN 1250 64.2 21.2 1.081 0.945
Rem Thunderbolt 40gr 1270 39.8 14.1 1.233 0.998
SK 36gr HP - High Velocity 1263 30.2 11.1 0.769 0.554
SK 40gr Standard Plus 1059 45.1 16.1 0.599 0.183
SK 40gr Rifle Match 1052 34.2 13 0.697 0.576
SK 40gr Pistol Match 1084 28.1 10.1 0.747 0.551
Norma Tac 22 40gr RN 1117 21.2 7.4 0.644 0.504
Fed Gold Medal Target 40gr 1112 34.4 11.5 0.576 0.489
Ammunition Brand CA Ranger 18" Barrel ES SD Av. Group" Best Group"
Fed 36gr HP Blue Box 1269 62.9 24.4 1.223 0.988
Rem Cyclone 36hr HP 1309 63.3 22.1 1.011 0.797
Fed Auto Match 36gr hp 1319 49.3 16.3 1.234 0.991
Am Eagle 40gr RN 1260 21.4 7.3 1.122 0.981
Rem Thunderbolt 40gr 1258 39.1 13.2 1.223 0.996
SK 36gr HP - High Velocity 1260 33.4 12.9 0.899 0.756
SK 40gr Standard Plus 1078 53.1 17.5 0.556 0.291
SK 40gr Rifle Match 1084 22.2 8.9 0.611 0.464
SK 40gr Pistol Match 1100 21.1 7.6 0.636 0.611
Norma Tac 22 40gr RN 1084 15.9 5.6 1.131 0.989
Fed Gold Medal Target 40gr 1116 40.4 14.3 0.802 0.691
Below you will find the test results, data was gathered on a Garmin Xero C1 Pro, all data is the average of 3 x 5 shot groups at 50 yards, I had read in the past that 22 LR achieves max velocity in 18" barrel, some say 16" anyway the chart below just confirms that, in fact in some case velocity was a tad higher out of the 18" CA than out of the 24" CZ. of course the CA Ranger is said to have a match grade chamber which may or may not make a difference. One other thing that I have know for some time now from shooting my long range centerfire's is that the lowest ES and SD is not always the most accurate load, again this is shown below.
Ammunition Brand CZ 457 24" Barrel ES SD Av. Group" Best Group"
Fed 36gr HP Blue Box 1263 49.6 15.7 0.988 0.791
Rem Cyclone 36hr HP 1309 36.8 12.9 1.211 0.867
Fed Auto Match 36gr hp 1296 24.7 8.8 1.112 0.899
Am Eagle 40gr RN 1250 64.2 21.2 1.081 0.945
Rem Thunderbolt 40gr 1270 39.8 14.1 1.233 0.998
SK 36gr HP - High Velocity 1263 30.2 11.1 0.769 0.554
SK 40gr Standard Plus 1059 45.1 16.1 0.599 0.183
SK 40gr Rifle Match 1052 34.2 13 0.697 0.576
SK 40gr Pistol Match 1084 28.1 10.1 0.747 0.551
Norma Tac 22 40gr RN 1117 21.2 7.4 0.644 0.504
Fed Gold Medal Target 40gr 1112 34.4 11.5 0.576 0.489
Ammunition Brand CA Ranger 18" Barrel ES SD Av. Group" Best Group"
Fed 36gr HP Blue Box 1269 62.9 24.4 1.223 0.988
Rem Cyclone 36hr HP 1309 63.3 22.1 1.011 0.797
Fed Auto Match 36gr hp 1319 49.3 16.3 1.234 0.991
Am Eagle 40gr RN 1260 21.4 7.3 1.122 0.981
Rem Thunderbolt 40gr 1258 39.1 13.2 1.223 0.996
SK 36gr HP - High Velocity 1260 33.4 12.9 0.899 0.756
SK 40gr Standard Plus 1078 53.1 17.5 0.556 0.291
SK 40gr Rifle Match 1084 22.2 8.9 0.611 0.464
SK 40gr Pistol Match 1100 21.1 7.6 0.636 0.611
Norma Tac 22 40gr RN 1084 15.9 5.6 1.131 0.989
Fed Gold Medal Target 40gr 1116 40.4 14.3 0.802 0.691
