Here are my notes from my .22-250 loads…always work up from the lower volume load. (Never had a .223) My Rem 700 Lite Varmint liked the H380 loads best.
22-250 Remington
55gr. Ballistic Tip® *Most Accurate
Ballistic Coefficient: .267
Sectional Density: .157
* Most Accurate Load Tested
Powder: IMR 3031
Charge Weight (in grains) Muzzle Velocity (fps) Load Density
32.0 3608 fps 75%
30.0 3403 fps 71%
28.0* 3198 fps 66%
Powder: AA2460
Charge Weight (in grains) Muzzle Velocity (fps) Load Density
34.5 3598 fps 81%
32.5 3383 fps 77%
30.5* 3168 fps 72%
Powder: H380
Charge Weight (in grains) Muzzle Velocity (fps) Load Density
39.5* 3736 fps 93%
37.5 3591 fps 88%
35.5 3381 fps 84%