I've seen 2810fps with 140 smk and 2750 with 140 hpbt-m with 42.5gr reloder 17. Rifles a factory 20" savage fcp-sr. The smk was with a magnetospeed and the hpbt-m was with a labradar. The same charge weight worked out the best for the 143 eldx but I never had the chance to chronograph it.