Hey guys, I bought some IMR 4895 thinking it was H4895, did some research and it seems like it will be acceptable for the 223 but is there a good rule of thumb for a load? Should I load a certain percent less or more with IMR4895 when using H4895 data? None of my books have IMR4895 listed, only H4895. I'll be using a 55 grain Sierra Gameking Spitzer Boattail, can get 63 grain Sierra Varminter bullets if those would produce better results. Thanks.