Loads for 24” Lilja Barrel

[Bobke]

What altitude are you shooting at? I get around 2500 FPS at 1300’ with 27.4 ARC and a 123 Sierra in a 20” barrel and although BC is slightly better than ELD, your dope for 1k and 13 mils In 24” barrel would indicate velocity In lower 2400’s. Have you chrono’d your 27.7 load?