here's some loads for my 221 (CZ 527 American)
221 Fireball CZ 527 22"
30 gr. - Berger @ 1.825", 16.0 grs Lilgun, CCI400 ~ 3760 fps, .67" 5 shot 100m
40 gr. - Nosler Ballistic Tip @ 1.830", 15.7 grs Lilgun, F205M ~ 3398 fps, 1.7" 5 shot
- Nosler Ballistic Tip @ 1.905", 16.0 grs Lilgun, F205M ~ 3535 fps, .92" 3 shot 100m
- Nosler Ballistic Tip @ 1.915", 19.0 grs H4198, F205M ~ 3150 fps
- Nosler Ballistic Tip @ 1.905", 19.4 grs RL7, CCI 400 ~ 3185 fps avg, .67" avg 3 shot
- Nosler Ballistic Tip @ 1.905", 19.6 grs RL7, F205M ~ 1.55"
- Nosler Ballistic Tip @ 1.905", 19.8 grs RL7, F205M ~ .9" 5 shot
- Hornady Vmax @ 1.870", 15.5 grs Lilgun, CCI400 ~ 3412 fps, .9MOA
- Barnes Varminator @ 1.830", 15.9 grs Lilgun, F205M ~ 3384 fps avg, .84MOA
45 gr. - Barnes TSX @ 1.89", 15.0 grs Lilgun, CCI400 ~ 3280 fps, 1" 3 shot @ 100y
50 gr. - Hornady SPSX @ 1.897", 18.5 grs H4198, F205M ~ 2905 fps
- Hornady SPSX @ 1.87", 5.5 grs Bluedot, F200 ~ 1760 f/s, .75moa
- Speer TnT @ 1.830", 14.5 grs Lilgun, F205M ~ 3039 fps, MOA
- Speer TnT @ 1.830", 18.5 grs H4198, F205M ~ 2970 fps - bad accuracy
- Speer TnT @ 1.89", 4.0 grs Bluedot, CCI400 ~ 1275 fps
- Speer TnT @ 1.89", 8.5 grs Bluedot, CCI400 ~ 2255 fps
52 gr. - Sierra MK @ 1.873", 18.5 grs H4198, F205M ~
55 gr. - CT Ballistic Silvertip @ 1.956", 18.5 grs H4198, F205M ~ 2965 fps, MOA