Grendel powder that falls between H-335 and CFE

[LRRPF52]

I hope this isn't a stupid question, but something I wasn't sure of. On that chart, Accurate 1680 and CFEBLK are just 2 positions away from each other. Is it safe to assume that both powders will be close to each other in pressure??? Of course I will test it, but I was curious if that was safe to use a powder that is 2 positions away? 8.6 blackout uses Accurate 1680 and I'm swapping it out with CFEBLK to test with.

Interesting how far away on that chart CFE223 and CFEBLK are...just sayin'...I see a lot of powders spread out over half that chart on powders that are used to load 6.5 Grendel. Is it surprising that the OP was looking at CFE223 and H335 ???

KW

CFE BLK and CFE223 are totally different powders with a copper fouling remover additive.

CFE BLK is way fast for cartridges that have more bore volume and less case diameter relative to the bore. Hodgdon’s was targeting the 300 Blackout handloader with that powder, as an example.

AA1680 is popular in 6.8 SPC and 7.62x39, but is not appropriate for Grendel due to burn rate.

When they released the CFE BLK, I was immediately worried that some people will mistake BLK for CFE 223, which is why I take the extra effort to write out the full powder nomenclature any time I discuss them, or to the extent that they are distinguishable from others.