Thread: ADI book max’s

Greetings again Nathan F,
This moring I looked up the Nosler data for the .223 with 69 and 70 grain projectiles. Their listed max was 24 grains of H4895 for 2,810 fps in a 20 inch barrel and a Nosler case. They list that load for a range of projectiles of that weight. I referred to the pistol data to show the differences in velocity due to the shorter barrel. A .223 pistol is just a bolt action rifle with a short barrel and a handgun stock so not loaded to a lighter pressure. Some refer to them as hand cannons. The Nosler data also shows IMR4895 as a little faster than H4895/ AR2206H. This is more in line with my results over the years and I am starting to regard the Hodgdon/ADI data as borderline hot and likely extremely hot with projectiles other than the very soft Sierra 169 grain HPBT. I strongly suggest that you do the load test I mentioned in my first post. If your cases will not hold a primer after a couple of firings then the load is too hot. This is my last post on the matter but am happy to answer questions PM or other.
Regards Grandpamac.