Bulldog563

Kynoch lists very similar loads for the 3" and 3.25", but, list a lower pressure for the 3.25".

In fact they list their 3" at 25fps faster than their 3.25".

Technically the case would probably hold 12 or so more grains of powder, so, maybe you could get an extra 100fps.

But, note what Kynoch chose to do.

They chose to get the same performance except do it easier.

If you are buying ammo choose the most readily available.

AR2201
The gods are just, and of our pleasant vices
Make instruments to plague us.