I guess I've been fortunate in the past, and found load recipes that have been quite accurate for my shooting needs. I would like to try conducting a ladder test for my 2 ar's in .223. What would be a good incremental increase of powder to conduct a good test? Currently I'm working with 55 gr pills and Winchester 748. Would .5 gr increments be too much or could that set the baseline? Then I could do some fine tuning from there. The range is 22.5 gr to 25 gr.