Buy yourself a better primer catcher, and avoid combing the floor looking for them
Some unusual quirks can occur when loading progressively.
Good habits help ensure good results. Feel more confident on the firing line by keeping accurate handloading records.
The effects of different primers on ammunition accuracy is a topic that interests many, but which relatively few can easily test with precision. Most competitive shooters are limited in their access to a 1000-yard range and a quality accuracy-testing facility. Thus, experimentation with primers is often done at shorter ranges, relying heavily on chronograph results to help select primer brands or lots by velocity uniformity and accuracy testing.