Can AR Comp be downloaded like H4895?

[fatelvis]

Just throwing this out there.... Since ARComp can be loaded almost exactly like H4895, and behaves almost the same, can you use the same 60% of max load procedure, for reduced recoil loads?

 

[Oso]

It has been my experience that these two powders are twins. I bet it’ll work the same in reduced loads. Load up a few cases and report back

 

[SeabeeKen]

I'd ask Alliant that question, not guys without a laboratory.

 

[105Coues]

Tagging in. Great question

 

[joshb]

I wouldn’t. Maybe if I had a junk gun on a private range with a long string?

 

[Alliant Reloading]

Hi fatelvis,
Good question and observation on how the bulk burn rates of AR-Comp(TM) and H4895 are very close. The two propellants are very different designs though, so we wouldn't recommend using the IMR rule of thumb for reduced loads. I believe that was IMR's general rule, and I don't believe the H4895 is exactly the same design either. They both use DNT for the deterrent though, so maybe it works ok.
Be safe and shoot well,
Paul