6 x 45 Ackley

[pupsdad]

I have a barrel in my lathe all threaded and ready to chamber, I'm renting a reamer. I was all set on a 6x45 Ackley but I'm thinking what else is out there. I know 6mm TCU but is there other options. It's a 13.5 twist and I have a bunch of old match bullets I'll be shooting. Reamers are getting pricey and I don't see myself ever cutting another so renting seems the way to go but I'm just kind of not inspired by this project.

 

[muleystalker]

I did a 6x204 throated for 95gr SMK's. A strain neck up is all it takes. Lots of brass available. It ends up basically being an 6x222 Mag improved. I use off the shelf 204 FL Bushing dies with the appropriate bushing and I went with a 204 R Forster Micro seating died with a with 6mm seating stem, I called Forester and talked to one of the guys in the back, told himwhatc I was trying to do and he said it was doable and sent me the parts. It would be a screamer with the lighter bullets. My barrel is a 1:8.

 

[HandgunHTR]

I have a barrel in my lathe all threaded and ready to chamber, I'm renting a reamer. I was all set on a 6x45 Ackley but I'm thinking what else is out there. I know 6mm TCU but is there other options. It's a 13.5 twist and I have a bunch of old match bullets I'll be shooting. Reamers are getting pricey and I don't see myself ever cutting another so renting seems the way to go but I'm just kind of not inspired by this project.

The 6TCU and 6X45AI are essentially the same thing.

If you are looking for a bit more speed, then I recommend the 6X204 that muleystalker recommended. Not many other options out there for a .223 bolt face 6mm. If you can open up the boltface to accept PPC/ARC cartridges, then 6ARC is a great option. Of course it is designed for heavier bullets, but it would still work with lighter bullets.

 

[pupsdad]

Kind of what I thought I would get told I'm going to think some more on this.

 

[AllThingsAI]

I built a 6x45AI and a 25x45AI…I absolutely love them both! Both built on Tikka T3x actions. My 25x45AI build thread series is on the forum, I did this several years ago. Build the 6x45AI…can’t go wrong!

 

[Oso]

Go 6TCU… and if you want faster then 6ARC

 

[HandgunHTR]

Kind of what I thought I would get told I'm going to think some more on this.

The 6X45 and 6TCU are both great rounds. Especially if you only plan on shooting lighter bullets. You won't run into mag length issues, you will get velocities that will frankly surprise you and the dang things just shoot.
I have a .223 AR upper that never sees a lower anymore because the 6X45 is always chosen over it.