I have been reloading for 10+ years and when it comes to 223/5.56, after cleaning/sizing/trimming, I load the 5.56 using 5.56 load data and 223 using 223 load data.
At my gun club today some members and I were talking and a handful of them claim that after you resize 5.56 brass, it becomes a 223 and should be loaded accordingly. I have always continued to use 5.56 data after resizing 5.56 brass. The load data between the two isn't significantly different, but for precision shooting it is.
Have I loaded thousands and thousands of rounds over the years without knowing this or is it not true? You would think it would take a lot more force to run thicker wall'd 5.56 brass through a 223 sizing die if it was.
At my gun club today some members and I were talking and a handful of them claim that after you resize 5.56 brass, it becomes a 223 and should be loaded accordingly. I have always continued to use 5.56 data after resizing 5.56 brass. The load data between the two isn't significantly different, but for precision shooting it is.
Have I loaded thousands and thousands of rounds over the years without knowing this or is it not true? You would think it would take a lot more force to run thicker wall'd 5.56 brass through a 223 sizing die if it was.