6x45? Any one

[Lopili]

Unless a man had a stash of old 70 grain varmint or benchrest bullets he wanted to shoot up, I would skip the 6x45. No practical improvement at all over a 223.

I dont necessarily agree that there's no practical improvement. The small 6mm hits noticeably harder, particularly when smaller 'big game' come into the equation. A 70gr from the 6mm seems to do both varmint and small big game duties better than a mid weight projectile from the 22cal which is better on the later, or a lightweight 22cal which is better on the former. A Nosler BT in 22cal can admittedly do quite a bit of both however, always given good levels of penetration on 100lb + some animals. That's what I've seen anyway.

 

[ArtinNC]

I have a 6X223 in a 16" contender for 45 years but the only thing I shoot is 65 gr bullets at Groundhogs with a mild load . Pretty good out to 150 yds I use to shoot it a lot but now at 85 It does not get shot much any more .

 

[AWS]

I've been shooting a 6x45 for 30+ years, great called coyote round and mine, Rem 600 PacNor barrel is extremely accurate, a little heavy handed for saving fur if you get near the edges.

20P, I have three, an AR, Savage HB and a little 700 carbine I built. Kills coyote well, easy on fur. AR 39gr Speer, Savage HB 40gr NBT, Rem carbine 32gr Nos Varmagedon FBHP great under 200 furtaker.

I would think a 25-45AI would make a dandy little deer rifle I shoot a 25-204 for deer, they should both have near the same capacity. 100gr Partition at 2800 fps matching the original 250-3000 and 257 Roberts factory specs.

 

[JSH]

The 25’s as I recall will only make mag length with a very small specific number of bullets. That being number one reason I never fooled with 25,6.5,7 or 30 cal.

Brad, I found the 6TCU rifle to pretty much equal 6ARC. This is with early load data from years ago, and old BR guys, lol no pressure signs. I would have went 6ARC if I would have know about it. The following year after my build, the ARC arrived on scene.

 

[nakneker]

I had a Remington 788, kreiger barrel and McMillan stock I traded from my son who lost interest in a project he was going to do. I end up trading him for a shotgun he wanted and sent the parts to Zack at Old Dominion. The result was a 6-223 or 6x45 if you prefer. Feeds great out of the little 788 mags, that rifle makes it easy to shoot itty bitty groups. My first bullet choice I wanted to try was a Sierra SBT 80 grain, it shot so well I called it quits but I have the feeling the rifle would shoot most any bullet exceptional well. Recoil is non existent. I too am sitting on a pile of LC 223 brass and it just made sense. I have plenty of small 22 caliber rifles and wanted something different. Zero regrets!

 

[StumpGrinder]

I was just laying here thinking of all the LC 5.56 nato brass i have , 223 rem and bags of different brands
Looking at a world of different cartridge it seems impossible to make a decision what is the smartest financial decision i can make moving forward in 2025 in regards to my personal inventory and components on hand.
I have spent a winter in my basement in case prep jail after receiving a box of LC brass. Sorting and cleaning, sizing trimming primer pocet work..you know the drill..it was hell haha
Anyway i have a bunch of 223 rem brass and a bunch of 221 fireball brass is the majority of my hoard.
What should i do with it?
I shoot 6br, 6.5 creed 223rem, and the 3 fireball cartridges
Like a 6mm- 223rem or the 6x45 cartridge is that correct?
The 6x45 is just a 223 opened up to 6mm?
Any one craming a 85, 90,gr. 6mm bullet in a LC 556 case.
What can i expect for accuracy, velocity, barrel life.
Do i want the 6x45 or an Ackly Improved

Is it a logical decision.?
I would like to order a .20 practical, and some sort of 6mm - 5.56 nato combo
To make use of my brass before i leave this earth.
2000 rounds of good brass can keep a man busy for a life time..hunting, and target shooting.
My competition days are over and im just messing around now trying to save what money. i have
All this brass, what was i thinking..hahaha
i can step back and see my obsessive and compulsive disorder all over my reloading bench
Im not gonna spend money on new rifles any more if i can controll my self..i just like talking about buying stuff i dont need I i dont need too
I have the best rifles i could afford already
So its absolutely foolish not to just spend money on a few barrels and be done with it.

I think if i have a
20 practical
223 rem
6mm- 223 rem
Im pretty sure im ready to order these barrels
I do enjoy turning necks. Just for the peace of mind and confidence. everything's has been cleaned up a little just a quick clean up on the necks.
These will all be the same size barrels
Any suggestions..
I have enjoyed Pac-nor barrels the best over the years. So i may order from them but i dont think they mess around with tight neck chambers unless i send them a custom reamer im not buying 3 different reamers.
So what would you do..
I could use some dirctions on my next move to make..

I got in to 6x45 and 25-45 Sharp's for the same reason. I had a 5 gallon bucket of 5.56 brass looking for a place to go. I don't usually load 5.56 because I can buy it about as cheap as I can reload it. I got my barrels from Blackhole Weaponry, they have a unique rifling that reduces pressure and increases velocity by reducing friction. Mine are 24" and I get 3000 fps from 80 grain ttsx and 2700 from 100 grain Interlock with CCI 41 primers and 25 grains of Tac. The 25-45 Sharps is the balistic twin of the 6.5 Grendel up to 140 grain bullets.

 

[cabenchrest]

6X45 all the way
Great improvement over a 223, not even a close comparison
Easy cases to make, they last a long time
I shoot a 6x45 1/14 twist with a 65 gr bullet

10 Shots in 0.289 MOA — Can Your Rifle Beat this XP-100 Pistol? « Daily Bulletin

TEN Shots in 0.303 (0.289 MOA) at 100 Yards Look at that target showing TEN shots at 100 yards, with eight (8) shots in the main cluster at the top. The ten-shot group measures .303 (0.289 MOA), as calculated with <a href=https://www.accurateshooter.

bulletin.accurateshooter.com

Dan

 

[StumpGrinder]

I'm at 2930 with a 80gr Dominator
24" BHW, AR platform 2.33 OAL.
I've never shot anything heavier

I've loaded 100 grain Interlocks to 2700 fps with CCI 41 primers and 25 grains of Ramshot Tac. I've also loaded 25-45 Sharp's with 80 grain ttsx and 100 grain tsx with 27 grains of Tac over CCI 41 primers as well as 110 grain flex tips, 117 grain Interlocks and 120 grain Game Kings to velocities equal to the 6.5 Grendel. Both of mine are also BHW 24" barrels. The 25-45 Sharps is Sammi and both should be way more popular than they are. They are a great way to repourpose 5.56 brass.

 

[StumpGrinder]

I dont necessarily agree that there's no practical improvement. The small 6mm hits noticeably harder, particularly when smaller 'big game' come into the equation. A 70gr from the 6mm seems to do both varmint and small big game duties better than a mid weight projectile from the 22cal which is better on the later, or a lightweight 22cal which is better on the former. A Nosler BT in 22cal can admittedly do quite a bit of both however, always given good levels of penetration on 100lb + some animals. That's what I've seen anyway.

I agree, the 6x45 and the 25-45 Sharps are both great improvements over 223/5.56.

 

[StumpGrinder]

I've been shooting a 6x45 for 30+ years, great called coyote round and mine, Rem 600 PacNor barrel is extremely accurate, a little heavy handed for saving fur if you get near the edges.

20P, I have three, an AR, Savage HB and a little 700 carbine I built. Kills coyote well, easy on fur. AR 39gr Speer, Savage HB 40gr NBT, Rem carbine 32gr Nos Varmagedon FBHP great under 200 furtaker.

I would think a 25-45AI would make a dandy little deer rifle I shoot a 25-204 for deer, they should both have near the same capacity. 100gr Partition at 2800 fps matching the original 250-3000 and 257 Roberts factory specs.

Try the 25-45 Sharps, up to 120 grain bullets it's equal to the 6.5 Grendel.

 

[wildcatter]

I'[[ keep my 6x45 thank you. i have a 223 also, and no matter how you load it, the 223 will never out do the 6x45! in the first place it will never be as easy to feed as the 6x45, and beyond 150 to 200 yards, 6x45 does everything better than the 223! with any bullet weight.
Didn't do shaby with the two 85 grain Sierra HPBT I tried either, even being 1/2 grain different, and 2937 ain't bad with room to go up!

Never really worked up a load, just had a bunch of Benchmark I wanted to burn up, first time out, i decided forget load development, just shoot it like it is, with whatever load I picked. Since 29.0 grains was over 3300 fps with the 65 grain Bib FBHP, I decided to live with it! Maybe someday I'll try and tune a load for one??? Yep, I'll take it for wimpy little 6.7# rifle, with a 24" spaghetti barrel! oh ya, and LC brass,,,,,,


Go with the6x45, AND DON'T LOOK BACK!!

 

[squarefour]

-about 2650fps from my 20" AR barrel, so i am hopeful for about 2750 from my 26" bolt barrel (which i am still breaking in). That is about what the 223AI/80.5 was running. It was admittedly quite a mild load, but that's where the accuracy was.

I should probably update this since I finally bought a Garmin. I got a little over 2800 with the 95, but couldn't find an accurate node. I have settled on Berger 90BTTs going about 2730 with N133. There is a nice wide powder node at ~23gn. Got an SD of 8 over 24 rounds-for a small case that's pretty good. I am actually soft seating the bullets a bit at 2.47 COAL.