RE: Should I be worried?
Since you stated that you are new to reloading; just a word or CAUTION:
H4350 and IMR 4350 are not the same or equivalent powders!!!! Make certain that you are looking at the data for the EXACT powder that you are using.
A friend of mine loaded up a batch of test loads with IMR 4350 while mistakenly using the data for H4350 powder. When he got to the range and test fired them, he began splitting cases way before he got to the higher loads.