300 HAM’R

[RRomig]

A friend called me yesterday about converting his AR over and I felt like I must’ve been off the grid. Anyone have any personal experience with this. As of now I’m looking for a reason not to jump on board. My last 6.5 creedmoor build was to get my night set up down from 14 lbs to 11 lbs. This set up would get me closer to 9. Walking for hours at night those pounds add up.
Ammo cost and availability would probably come around if this caliber catches on

 

[E.Shell]

Better ballistics than a full-power .300 Blackout.

IMHO, the very biggest advantage is that it will NOT chamber in a 5.56/.223 chamber like the .300 Blackout.

 

[babalou]

Just read up on it. Crazy. I did not look at ballistics and distance.

 

[babalou]

Does anyone on here have the 6.8 SPC? Interesting. Rabbit holes here I come.

 

[firemn260]

Does anyone on here have the 6.8 SPC? Interesting. Rabbit holes here I come.

I put a 6.8 together using a ARP 16” barrel. I have to admit it was a impulse project. It shot well with 85gr ttsx. It was hovering just over 1 moa but I never really put the time and effort into tweaking the load for it. I’m sure it’s a good mid range deer cartridge but I’m thinking it really shines in what it was designed for and that is putting down 2 legged critters. It uses some of the faster rifle powders too so there is no doubt in my mind it will also work well in a shorter barrel. I also believe it’s true potential can only be obtained by handloading for it. It seemed the factory loadings are kinda gutless. My opinion of course.
I finally realized there wasn’t much practicality for my uses so I sold the barrel and bolt to my buddy.

 

[johnkn]

I have a 300 HAM’R, in my opinion if you don’t want to go subsonic it’s THE 300 to have.


.

 

[babalou]

I put a 6.8 together using a ARP 16” barrel. I have to admit it was a impulse project. It shot well with 85gr ttsx. It was hovering just over 1 moa but I never really put the time and effort into tweaking the load for it. I’m sure it’s a good mid range deer cartridge but I’m thinking it really shines in what it was designed for and that is putting down 2 legged critters. It uses some of the faster rifle powders too so there is no doubt in my mind it will also work well in a shorter barrel. I also believe it’s true potential can only be obtained by handloading for it. It seemed the factory loadings are kinda gutless. My opinion of course.
I finally realized there wasn’t much practicality for my uses so I sold the barrel and bolt to my buddy.

Agreed. I was debating that or the 300AAC and decided 300. I did not want to get an AR that had a short life. Then I built one out in 22 nosler with an athlon 56 scope. Go figure.

 

[firemn260]

Agreed. I was debating that or the 300AAC and decided 300. I did not want to get an AR that had a short life. Then I built one out in 22 nosler with an athlon 56 scope. Go figure.

Funny how that happens. I almost fell for the 224 Valkyrie but I’m sure that would of ended up in the pile of barrels too.

I love my 300blk. Once I figured out a 150gr fmj subsonic load that cycles my pistol with a can on it, that’s really all I shoot through it. It also keeps me from getting the itch to put a pistol caliber AR together.

 

[akalma]

Funny how that happens. I almost fell for the 224 Valkyrie but I’m sure that would of ended up in the pile of barrels too.

I love my 300blk. Once I figured out a 150gr fmj subsonic load that cycles my pistol with a can on it, that’s really all I shoot through it. It also keeps me from getting the itch to put a pistol caliber AR together.

150gr subsonic for 300blk? Would you please share your load?

 

[firemn260]

150gr subsonic for 300blk? Would you please share your load?

I will have to check my notes when I get home in the morning so I can give you accurate info. I can’t recall off the top of my head but I use 1680. That’s coming out of a 10.5” barrel. They are right on the edge because they will crack every once in a while in my 16” TC encore.

 

[babalou]

Funny how that happens. I almost fell for the 224 Valkyrie but I’m sure that would of ended up in the pile of barrels too.

I love my 300blk. Once I figured out a 150gr fmj subsonic load that cycles my pistol with a can on it, that’s really all I shoot through it. It also keeps me from getting the itch to put a pistol caliber AR together.

150g? dang, I would think at least 194g. Awesome. Yeah at least the Valkyrie has multiple ammo vendors. For me just Nosler- when you can get it. Shoots a little flatter than the Valkyrie from what I have read. We shall see.

 

[babalou]

I will have to check my notes when I get home in the morning so I can give you accurate info. I can’t recall off the top of my head but I use 1680. That’s coming out of a 10.5” barrel. They are right on the edge because they will crack every once in a while in my 16” TC encore.

yeah I would think a few fliers.

 

[firemn260]

10.2 gr of 1680

 

[akalma]

10.2 gr of 1680

Thank you, sir!

 

[babalou]

thanky

 

[outrider58]

Watch a vid on brass forming. That might change your mind. I'll stick with my 300AAC, thank you.

*There's always going to be a gun that will out shoot another gun. It's a trap*

 

[K31]

Better ballistics than a full-power .300 Blackout.

IMHO, the very biggest advantage is that it will NOT chamber in a 5.56/.223 chamber like the .300 Blackout.

Can you use 5.56/.223 mags or do you have to have ones for 300 HAMR specifically?

 

[outrider58]

Can you use 5.56/.223 mags or do you have to have ones for 300 HAMR specifically?

The cases are/can be formed fro 5.56 brass so I would think they would work as long a OAL accommodates.

Magazine | AR15 | Universal | 5.45 | 300BLK | 300HAM'R | 30

Wilson Combat® Magazine, AR15, Multi-Caliber, 5.56/223/300BLK/300HAM'R, 30rd, Black

shopwilsoncombat.com

 

[RRomig]

Watch a vid on brass forming. That might change your mind. I'll stick with my 300AAC, thank you.

*There's always going to be a gun that will out shoot another gun. It's a trap*

This all day! I was bored when I started this thinking it might be another fun build. But it really starts splitting hairs and really how many AR calibers do I want. If 223, 9, 300blk, 350 legend, 308 and 6.5 creedmoor can’t get it done I think it’s more of a shooter problem.

 

[Bountied]

I like the 220gr subs in my 10.5" 300BLK with the Rugged 45, it's really quiet. I can't reload for 300BLK right now but the 150gr sub sounds interesting.