6mm/223.*

[SamBlankenship]

Im in the process of picking up a 6x45 or 6mm/223 upper its a blackhole barrel with standard free float tube ss barrel not sure on twist rate im still awaiting that info. Wanted to get some thoughts on it from the professionals the good the bad ect...

 

[SamBlankenship]

And i just noticed this went into the wrong thread....

 

[308pirate]

Do you mean 6mm/223?

 

[SamBlankenship]

Do you mean 6mm/223?

Why yes i do lmao. 6mm/223.

 

[308pirate]

Have some coffee, it's early

LOL

 

[DAVETOOLEY]

And it's called a 6X45 in at least one loading manual.

 

[redneckbmxer24]

I had a couple 6x45 AR's, with 87-95gr bullets it's a good option if you want to deer hunt with an AR in a state where hunting with 223 isn't legal, but not really great for much else.

A 9 twist will allow you to shoot pretty much any bullet you want that would fit mag length.

 

[SamBlankenship]

I had a couple 6x45 AR's, with 87-95gr bullets it's a good option if you want to deer hunt with an AR in a state where hunting with 223 isn't legal, but not really great for much else.

A 9 twist will allow you to shoot pretty much any bullet you want that would fit mag length.

I am a fan of 6mm anything. And can see where the hunting aspect comes in also. im picking this one up just well honestly because the price is right and i can turn it if it turns out to be something im not into. Kinds like the 25/45 sharps AR. That rounds interests me also. But only from a handloaders perspective.

 

[SamBlankenship]

And it's called a 6X45 in at least one loading manual.

Yeah the barrel is even marked 6x45. But everything you find online its called the 6mm/223 kinda a odd duck i guess.

 

[Travis224]

I have several and have a reamer now too. It’s a terrific cartridge and one that is a hammer. The best bullet weights are 55-70 grn bullets. It’s a touch slow otherwise.

 

[SamBlankenship]

I have several and have a reamer now too. It’s a terrific cartridge and one that is a hammer. The best bullet weights are 55-70 grn bullets. It’s a touch slow otherwise.

I shoot both 55gr and 70 gr nosler varmint BT's out of my 700 remington varmints what would the upside to shooting the 6x45 over say a 243 with same bullets? Besides the fact that it being in a Ar platform instead of a bolt gun lol.

 

[velvetant]

I have a 16" 6x45 Blackhole barrel on my AR15. Very accurate and has become my go to varmint rifle. Really puts the hurt on varmints.
I shoot a 55gr NBT and the 70gr Varmageddon both with H322/CCI450/LC brass

 

[SamBlankenship]

I have a 16" 6x45 Blackhole barrel on my AR15. Very accurate and has become my go to varmint rifle. Really puts the hurt on varmints.
I shoot a 55gr NBT and the 70gr Varmageddon both with H322/CCI450/LC brass

I love those 70gr varmint bullets devistating out of a 243 thats for sure. 40 gr of imr4064 just devistating i tell ya.

 

[TexasUplander]

i have built quite a few of the ackley version. they are pretty amazing for their size and it is my huntng rifle of choice even in a bolt gun. the last 2 big deer i killed were with an 80gr sierra blitz at 3100fps. we have even shot the 105 amax in 8 twist barrels to velocities you would not believe. the 95smk at 2950fps is actually a very capable match gun especially for new or recoil shy shooters.