300 AAC Blackout / HC / CFE BLK

[Jay Andrew]

Start with Accurate 1680 data. The powders are very similar. Both are St. Marks ball powders, and both are very close in burn rates.

Technically both powders are on the slow side for 300 BLK as the pressures developed are well below SAAMI MAP (~30kpsi vs 55kpsi), but the amount of gas generate and the burn rate happens to work well enough to cycle an AR. So this is one load and powder that would be hard to get into trouble with.

[lklawson]

Start with Accurate 1680 data. The powders are very similar. Both are St. Marks ball powders, and both are very close in burn rates.

Technically both powders are on the slow side for 300 BLK as the pressures developed are well below SAAMI MAP (~30kpsi vs 55kpsi), but the amount of gas generate and the burn rate happens to work well enough to cycle an AR. So this is one load and powder that would be hard to get into trouble with.

Thanks.

I found Accurate's load data PDF for 300 BLK:
http://www.accuratepowder.com/wp-con...ckout_Data.pdf

I'm not seeing any Hard Cast bullets listed. Am I looking in the wrong place?

Peace favor your sword,
Kirk