They are very similar... I have used TONS of 2015BR. Love it. One of my best loads for 223 is is with 2015BR. Reloader 10X is nearly identical BTW. I am interested to try H322 and Benchmark both as a substitute but of the kernel size. H322 meters like a dream through a progressive.
I prefer AA 2015 in the 6BR with the 55 gr SBK and up to the 70 gr SBK and it meters very well. Almost as good as ball powder. Also of consideration is the AA Data 74 and AA 2520 these two powders give great performance from 70 gr to 87 gr. After that from 87 on up I think RL-15 and IMR 4320 have the edge. Mark
I've used a good bit of both powders over the years . And most of it not in ways you guys here would ! XMR2015 and H322 are EXCELLENT for jacketed and cast bullet loads in the 444 Marlin . H322 is also excellent for cast in the 45-70 . I've used H322 quite a bit in the 204 Ruger , 222 REM and 223 REM . And if my memory serves I used it a bit in the 6mm PPC about 15 years ago . I think IMR8208 is every bit as good as H322 now . And with that being said I buy H322 and IMR8208 in 8 pounders but still purchase XMR2015 by the pound !
