Thanks to Wally (How’d I know you’d offer the winning clue) I went to the manufactuer’s website:
When loading for these bullets, you need to use data that will attain 800 fps as a minimum. Most of the data for this bullet weight was created using a dead soft lead projectile with velocities under the 800 fps and will not work for a this bullet at those lower velocities.
According to my manual, The load I was using was clocking around 750 FPS. That’s pleasantly in the danger zone. Now for REALLY good news there is a Blue Dot load that boasts 810FPS, and a titegroup load that starts around there and maxes out at just over 900.
So I might play around with the blue dot load, but give titegroup the old college try when I get around to getting some of it!
One more question before I go. People talk about seating wadcutters flush with the case mouth, does that make much of a difference with a revolver load? I’ve been loading mine with just a few mm of bullet sticking up above the case mouth, should I be seating them lower?