a buddy of mine been hounding me to try H4227 powder in my 357 and 44, so i went to the gun store and the guy there told me they quit making it 5 years ago, but he had IMR4227(it appairs that IMR,HODGDON,and WIN are owned by the same comp.) so i bought it, now on my burn chart they are next to each other in burn rates. so do you think i can use the same charge weight with IMR4227 as i would with H4227,i know that before you could on some loads and not on others. or should i just start low and work my way up and see how that works?