I have been reloading for the 223/5.56 for a couple of months now, there is plenty of 223 data but not as much 5.56 data. The only place where I have seen data for both is western powders, it's nice to be able to compare loading data between the two. Their data shows that 5.56 cases can be loaded with at least a grain or more powder with the same bullet type and weight. I have an accurate load consisting of 25.5 gr of H-4895 with the 50 gr Nosler BT varmit in 223, am I correct to assume that I can increase the powder charge when using 5.56 cases, unfortunately Hodgdon does not have data for both. Any help or advice is appreciated.