Home Forums Hunting & Shooting Custom Rifles & Wildcats 6mm-223 (6x45) info needed

I've killed just fine with the 6x45, but a Barnes doing 3200fps in a 223 is mo'better than a Barnes doing 2800fps in a 6x45.

All a 6x45 grants you is more expensive dies and a custom rifle. It does not kill deer one iota better than a 223.

That is true. However, should the Game Warden catch you killing a deer with a .223 and it is not permitted in your state....that could be a problem. Not better, but may be the difference between legal and illegal.

I shoot lots of 105 Amaxs at 2600 fps in my 6x45 and I can say that that's damn sure as hard as I'd like to stand on it.

If 2700 works for you then great, but I don't want to shoot any of your ammo.

I totally concur with this. I'm on my 2nd 6x45 now and would happily use my 22 CFs in their place if my home state didn't have a 6mm minimum.

I do think that a 6x45's virtue is that the moderate speed allows you to have very good performance on deer with standard jacketed bullets from 70 grains on up.

Dude,

What length Barrel?

Thanks,

Jerry

I would say get a .223 or download a .243 with 85gr partitions at a similar 2800 fps. With the .243 she will never need another rifle unless she gets serious about Elk hunting. The .243 with good bullets is plenty for Elk meat hunts too. She would need a new stock at some point though.

But if you wanted a project and something she could pass on to her children I have seen some beautiful Kimber of Oregon rifles in 6x45 and others built on the Minnie Mauser action that were incredible pieces of custom work and future family heirlooms.

This reminds me of a very old argument betwen Elmer Kieth and Jack O'Connor only in miniature.

That's pretty good advice from Tejano.

I lucked on to a LH Kimber of Oregon in 6X47 and they are a great rifle. Mine has a 22" barrel with a 9" twist but also has a short mag like a lot of small action 222/223 rifles. The little Zastava has more room to extend the mag if you plan a custom. To get the best out of a 6x47 you really need a mag length of around 2.5". FWIW I can only get 2550 fps from 100 gr pills but close to 3000 fps with 87 gr Hornady's.

To me anyway, it does seem like a step up from a 223 but a 223 with good bullets and a fast twist barrel have certainly closed the gap.

This is the "Custom rifle and wildcat" forum. Sorry, couldn't resist.

Jerry,

Mine has a 20" barrel

I've used a lot of smaller cased cartridges. Never seen the need to hot rod the load. I'd move up to a .250-3000 or a 6.5 Creed before I blew my cheek off.

I have built 9 6x45s to date. Savage actions 1/9" tw bbls from 20-24" for pals and my own use & kids rigs.
My go to antelope load is h335 behind the 90 or 95g nosler HBT bullet at 2728 fps.
The 85g sgkhp is another great/accurate bullet at 2840 fps
Drops goats fast fom 80-400 yards as those bullets just performs so well.
Coyote load is a 55g varmageddon at 3356 fps.

The 270 twisted 8" or better is THE schnizzle. You reap meaningful BC,at meaningful speed,with very modest powder consumption and very modest recoil/noise.

I've zero interest in shooting anything other than upper echelon 105gr BC's in any of mine and when doing so,alotta nice thangs happen by default,which reliably arrange terminal affects. One CAIN'T launch a boolit "too fast" and even the zookie Booger Hybird will hang tough. Whatcha' get is exceptional terminal affects,exceptional projectile reliability and an inherent option to launch 'em wherever/however you wish,in regards to backstop anatomy. They'll not get a guy in a pickle,like they do at higher impact velocities and that forgiving nature pays lotsa dividends,less any concessions. Hint.

While I've a goodly sense of Adventure,I'm happy at 2600-ish fps with same and don't exceed that threshold,nor do anyone I know with rifles chambered same. Bushed bolts bein' a given in all but (1),which is my Babiest Montucky and it's OEM issued pinhole/striker.

Every boolit thus far cited is simply a piece of fhuqking schit in comparison and if it's not 8" or better...rest assured you fhuqked up. Hint.

No thang to happily rattle through 500rds+ in a day,while doing dastardly deeds at obscene distances,as per whim. I LOVE it to 1500yds++ and have a coupla .224's and .243's to extrapolate in kind. Hint.

L-R:BR,270,XC,243Win SALAMI,243Win AYE-EYE,6mmRem SALAMI,6mmRem Aye-Eye,6-284 and Six Twat-Six.

The 270's get shot wayyyyyyy the fhuqk more than anything else...BR bein' 2nd. Hint.



Am happy to gun a 270 against most anything and of course do. Hint.

Typical outing with Babiest Montucky 2nd from left(18.5" 1-8" Bart') and 19.25" MTU-esque 1-7.75 Bart' A5 Heavy 270 amidship. Some high zoot wares sprinkled from start to finish.



The 223AI remains my favorite fhuqking chambering of ALL Time(got 14 of 'em and only in 7,8,9,10,12 and 14" twist rates)...but the 270 is simply a phenom when RPM'd correctly and fed good boolits.

Fhuqk downloading a 243Win. Hint.



You reap 223 logistics and a goodly increase in BC.



The Redding tapered expander makes all a breeze,with minimal runout. It's a schit choice in a Baby Sako,dogschit CZ,AR and others with heavy COAL concessions,but when allowed to breathe,shines fhuqking brightly. 2.450" is a nice start,though everyone is better than that with 'Max,Hornie HP's and of course Boogers.

As DBM's go,it is a cinch in both AM steel 5's and MDT poly 10's...fhuqk AICS poly 10's,they are dog schit. Hint.



She's a PEACH as a Chassis Bitch too. Hint.



Easy for me to say...if only because I shoot 'em all and tend to give boolits a thunk.

Hint.

A 18.5" 270 squirtin' 105's with 40+ Mils available beyond it's 200yd zero,WILL sell alotta builds,alotta glass and alotta 105's. It's a mind blowin' fhuqking HAMMER.

Seen it.(grin)

Fhuqk Ping Pong Balls.

Re-hint.

Boxer,

What OAL are you loading the 105 AMAX to in your "270?"

Who does your barrel installs?

Been gone for a few days and reading back through the posts. Some interesting points have been made. This build would strickly been for whitetails and paper. Just like to have something different. I saw the Lilja 6mm/8T in the classifieds. Hard time not pulling the trigger on that one, regardless of what I decide.

I saw that barrel too. A faux Ti 6x45 would be a lot of fun...

David
I shoot the 105 amax kissing the lands in my 6x45 at 2.463 OAL

Dude,

Modified mag box?

Yep.

The standard 223 mag box mod. I took out the factory block and epoxied in a piece of 1/4" aluminum stock that I cut to fit with a hack saw.

Thanks!

My HEAVY 270 smooches 105 Booger Highbirds square, at 2.545" COAL.

Hornie 105 HPBT's at 2.490" smoochin' likewise.

My Itty-Bitty smooches the 105 'Max at 2.475".



If only for perspective,because it never ain't not intellesting. With a miserly sub 25grs of powder and a like zero with the 105 Hornie HPBT,the 270 will kick the schit outta FGMM 175SMK's in both drop and drift...for them enthralled with M118LR-ish baselines. It REALLY stomps the fhuqk outta M852/FGMM 168SMK's. Hint.

The Booger will slip atmospherics a touch better,but Hornie's rugged/reliability and logistics is veddy veddy tough to whoop. The 105 JLK is slicker yet,but production volume is spotty at best. Pass the Hornie BTHP by the bushel,for Utility. Hint.

As mag constraints/mods go...it's no different than 223/223AI box tweaks. Simply smooch your most slickery projectile,toss yourself room to chase lands and move the shim to that locale. On 223,223AI and 270 I like to shim the aft. On 6BR,the fore portion of the box. Hint.

Montucky rearward 223AI aluminum 'box shim. Lotsa ways to do it,but start at the fhuqking start. Hint.





Montucky 6BR box for conversation,with both fasteners and epoxy workin' in conjunction. I'm a purty big fan of schit stayin' put. Hint.(grin)



No thang to arrange whatever you wish ala DBM and AM steel 5-rounders. Poke a couple empties in the well and punch,carve or whittle COAL as requisite...less disassembly. 10 second "job". Hint.




Montucky 270(shot the OEM 223 spout out) and have prolly only broken (3) mag springs in it,as nobody makes a good S/S one that'll weather. I go through more than a few in 700's too,so it ain't a Manufacturer quirk and in fact I prefer the 700 spring/milled follower(s) in Montucky bellies. OEM spacer slid to stern,in order to grant requisite COAL. Hint.



Itty-Bitty with the Illuminatti,will 100% reliably blow fhuqking minds at dastardly distant zipcodes. Only have a coupla more thousand 105 'Max to whistle through and then it'll simply be the 105 Hornie BTHP in everything,just because they ROCK.

A 20" MR contour wearin' a short shank,twisted 8" and punched 270 in a McMillan MR handle,would cover a fhuqking schit ton of opportunity,less batting a fhuqking eye.

6X MQ goes without sayin'...just sayin'.

Hint.