I have Chrono data for Heuters .44 mag , 240 grain, but it's FPS is from a 18" barrel on a Ruger 44 mag Carbine. Doubt it would help you much for a revolver considering the 13 inches difference.
Also have chrono data for a 210 gr HP handload with CFE Pistol Powder, that matches the velocity of the box Heurters ammo. The 210 HP bullet is my deer rifle round.

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Last edited by Sportsdad60; 10/19/17.