Looking for info on 300BLK load

[DizzyJ]

Specifically solid copper 125gr bullets and Accurate 1680

Had to find any info on these bullets in manuals or online.

Thanks in advance!

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[edzz]

look here
load data

 

[Twodogs]

Hornady book call's 20.8 max load.

 

[Caveman Jim]

Sorry, I can't help you brother. I shoot those nasty FMJ's and HP's with H-110 or W-296.
Good luck on your quest.

 

[kmk1012]

Maybe send an email to the manufacturers? I know it can be a PITB but, calling companies really has almost guaranteed me away.

 

[Richo877]

Hodgdonreloading.com only has load data for 1680 with 125gr nosler ballistic tip. Solid copper would have a lower BC than lead so it's going to have more drop in the long range, but if it's the same weight and profile projectile, you can use the same charge, right? Maybe start lower and work up? I guess I'm adding more questions than answers.

 

[DizzyJ]

look here
load data

That might be the ticket as I see copper bullets and Accurate 1680 used!
Thank you!

 

[DizzyJ]

Hornady book call's 20.8 max load.

Are those for solid copper bullets?
Thanks!

 

[DizzyJ]

Sorry, I can't help you brother. I shoot those nasty FMJ's and HP's with H-110 or W-296.
Good luck on your quest.

I'm looking at using some Speer TNT projectiles as well!

 

[DizzyJ]

Maybe send an email to the manufacturers? I know it can be a PITB but, calling companies really has almost guaranteed me away.

These are an unknown manufacturer bought from Midsouth Shooters Supply in bulk repackaging a few years back. Looks like they're moly coated too (black) Very cryptic other than the fact they're 125gr solid copper HPs.

 

[DizzyJ]

Hodgdonreloading.com only has load data for 1680 with 125gr nosler ballistic tip. Solid copper would have a lower BC than lead so it's going to have more drop in the long range, but if it's the same weight and profile projectile, you can use the same charge, right? Maybe start lower and work up? I guess I'm adding more questions than answers.
View attachment 1994790

I think there's more drag too due to increased surface area (longer bullet compared to lead core). I've also read that it's important to give more jump than with standard bullets due to increased pressure.

 

[Richo877]

I think there's more drag too due to increased surface area (longer bullet compared to lead core). I've also read that it's important to give more jump than with standard bullets due to increased pressure.

I think barnes would be similar, but they've got nothing for 125gr and their 110gr and 120gr don't use 1680. Would it be safe to cross reference a burn rate chart and start low with data for a relatively similar powder?

 

[DizzyJ]

I think barnes would be similar, but they've got nothing for 125gr and their 110gr and 120gr don't use 1680. Would it be safe to cross reference a burn rate chart and start low with data for a relatively similar powder?

If I can't find something closer to what I want, perhaps. Just trying to go the proven route before I run into the weeds too much.