300blk loading

[alexs2006]

start at 17gr and work up 20gr. look for pressure signs...yadda yadda, ymmv.

That’s what I’ll do! Thanks!

 

[alexs2006]

I'd go by Sierra's data if it is their projectile. be ready to pull down if you see pressure signs early on the ladder.

I see Hodgdon says 18.5gr will be compressed. Ive never been a big fan of those but I’ll tinker with it.

 

[alexs2006]

Ive pretty well figured out the 190gr sub x bullet will be my go to hunting and subsonic plinking bullet.

Now I’m playing with speed. I want to push these 110-125gr pills as hard and fast as I can safely. Just to see what I can get accuracy wise and see how well it does at distance. Out to 500yds.

 

[Please Delete]

I see Hodgdon says 18.5gr will be compressed. Ive never been a big fan of those but I’ll tinker with it.

that's with a nosler BT pill I think. Flat base should equal more case capacity. just start lowish.

 

[alexs2006]

that's with a nosler BT pill I think. Flat base should equal more case capacity. just start lowish.

I’ll start at 17 and creep up towards 20

 

[owen58]

Ive pretty well figured out the 190gr sub x bullet will be my go to hunting and subsonic plinking bullet.

Now I’m playing with speed. I want to push these 110-125gr pills as hard and fast as I can safely. Just to see what I can get accuracy wise and see how well it does at distance. Out to 500yds.

Just an FYI, I'm pushing 125gr SSTs over 2300fps with no pressure signs using lil' gun from a 16" bolt gun.

 

[BHPSteel]

On the 300BLK thing, I've got some 30 Cal 88gr copper-polymer composite bullets that are alleged to be good for velocities up to 2500fps that I have to work up a load for.

Looks like I have to fork out for some Accurate No.9 or SW Major Pistol if I can find any.

 

[alexs2006]

Just an FYI, I'm pushing 125gr SSTs over 2300fps with no pressure signs using lil' gun from a 16" bolt gun.

I have some lil gun also. Share recipe!

 

[owen58]

I have some lil gun also. Share recipe!

Obviously, this only applies to my barrel and SSTs, so use at your own risk:

125gr Hornady SST
19gr Lil’ Gun (I've gone as high as 19.5gr with no problems)
WSR primer
2.1” COAL

I developed this particular load for deer and it produced truly excellent results in 10% ballistics gel as well as a really delicious whitetail.

 

[1006]

16inch AR: I am shooting 150 fmj at 2005 fps with 17.2 LilGun and a Federal Small Rifle primer. Note Fiocchi primers with the same load gives 1954fps. 17.2 LilGun seems like a max load but Speer Data goes all the way to 20.0.

Generally: the 300Blk is not a naturally accurate cartridge—500yards is a big reach for it.