New case capacity 1.0gr difference, what will this do to my load?

[41 Colt]

I worked up a load using PMC brass & Prvi 55gr SP bullets, 24.4 grains of H335 was the best.

I'm now using IVI brass. I sized, trimmed and checked the weight and volume of a PMC & IVI case. The IVI case capacity was 1.0gr more than the PMC. The IVI was also heavier by 3.6gr but I don't think that will matter.

Is there a way to aim for what I think will be a good load in the IVI with the same bullet? Or will I need to start all over with load development?

 

[sunray]

"...IVI was also heavier by 3.6gr..." Likely thicker brass.
"...24.4 grains of H335..." That's only 1.4 grains over minimum. Should be fine.