I'm working on reloading Berry 230 gr 45 plated RN bullets. The Berry's FAQs say use the lead or low to mid FMJ loads. For CFE Pistol, the lead RN are 5.4-6.2. The only other data they have is for FMJ FP, which is 6.0-6.8.

My though was to start at 5.4 and work up, likely to mo more than 6.2. Sound reasonable?

Would the data for FMJ RN and FMJ FP be the same?

I don't have a chronograph, nor place to use one. Is there any other way to tell, if I'm reaching the limit, other than inspecting the case, or going by the accuracy/feel of the shot?