Any experience with IMR4227?

[N310toN170]

Good, bad or indifferent...I'd like to hear about setups with IMR4227 in AR platforms. I was able to get ahold of a pound and figured I'd give it a try. The burnrate shows almost the same as VihtN120 and the numbers are fairly impressive when a mock-up is done in QuickLoad.

I don't plan to use it for anything < 168 and will probably stick to SMK's up to the 240's.

Thanks in advance!