Is it 6x45 time?

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New member

All,

I went off on a Glock tangent, that may be winding down, and
in the process almost totally ignored my AR-15s.
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So I am looking at my RRA Varmint A4 upper, and started
thinking I have owned that one a long time, and maybe have
200 rounds down the tube. It was suppose to be for PDog
shooting, but it has never made that trip. SOooooo, I started
thinking it may be time to pull the heavy varmint barrel, and
go with a 20" HBar profile 6x45. I have a 6mm WOA, and a
6.8 SPC, so I am not sure I need another 6mm something, but I
am going to lighten up the barrel, so I may as well make it a
more interesting cartridge than the plain jane 223 Rem. At
least the grandson could use it for deer, with a 6x45 barrel.

Can anyone suggest a 6x45 barrel supplier to shop for a
20" SS HBar profile(.75" @ gas block) 6x45 barrel? I think
I would like a 1:8.5 twist barrel, but a 1:9 might do.

Thanks in advance for your replies.

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check out Specialized Dynamics. I have a 6x45 it is a Hbar profile and extremly accurate. something like that may just fit your bill nicely.
 
Scott's barrels are top quality and are priced very reasonably considering they are turned from Match grade Lilja blanks. He can also get different profiles, twist rates and any length you want. PM me if you have any questions.
 
Something to consider when choosing your twist rate is bullets that need a 1-8" will not load to mag lenth 2.26". The bearing surface will be below the case neck when at this lenth (nothing will be holding the bullet). I really see no reason to go with anything tighter than a 1-10 twist. It will spin any of the bulets you can load in at a stubby 2.26" COAL. Plus you start loosing lots of case capacity with the long bullets. If you will be loading sigle shot (not having to abide by 2.26" maximum) have at the 1-8"...

On a 2nd note. The 6x45 is a GREAT youth gun & very capable of taking whitetail with very mild recoil (an AR with calapsible stock fits youth very well also) I killed a couple with mine this past year with great results.
 
There's been some recent threads about the 6x45 I just wish with such an old wildcat cartridge some ammunition manufacture would load some up for us non reloaders. And I would look toward Scott at SD for a barrel. Seems real nice and can order just about anything to fit your need
 
You will love a 6x45! I love it so mcuh I convertered all my 5.56 AR's to 6x45. It can pack enough wallop to take down a deer with 85 grain partitions and send a 55 grain Nosler at slightly faster MV's then a .223 rem. I shoot Sierra 70 grain HPBT's and last year it put a big doe down DRT. If I wanna go to Coyotes 70 grain Blitz kings or Nosler BT shoot identical to the Sierra Matchking load, they are totally interchangeable in both my rifles.
 
black hills makes ammo for this round
also they do fit into the standard mag just fine and I have a 1:8 twist barrel
 
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Originally Posted By: MPFDScott's barrels are top quality and are priced very reasonably considering they are turned from Match grade Lilja blanks. He can also get different profiles, twist rates and any length you want. PM me if you have any questions.

I went by the website, and didn't see any product listings
for barrels. Just uppers and rifles...I have plenty of both...
Well maybe there is no such thing as "plenty", but I already
have 4 rifles. And I assemble my own. So does Scott just
sell barrels? I was hoping for a supplier that has them
binned already, rather than custom. If I want that, I will
give John a call at WOA.

To the suggestions regarding BHW, I am not sold on polygon
rifling, and given some past issues, I may not be comfortable
using that vendor. Thanks anyway.

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Scott will just sell barrels and will also sell a matched bolt for about $50 more if need be. I just got a 22" 1-10 twist .204 ruger barrel from him and installed it on last Tuesday. I sighted it in last night and while not ready to post groups yet (I was using some ammo I developed for my Savage 12fv) I was getting inch or slightly under groups, off a bi pod and jacket under the rear on the ground. I wasn't real serious about my shooting cause it was 105 degrees out but with very little wind (rare in KS). I think it will settle in and shoot better especially after I do some load development.

Shoot him and email if you are intrested.
 
Originally Posted By: hntr4lifeblack hills makes ammo for this round
also they do fit into the standard mag just fine and I have a 1:8 twist barrel

Yes black hills does sell a few offerings for 6x45 and yes they are loaded for mag length. Same for all other bullets mentioned in thread you can load them mag length. Also all of those bullets will run in a 1-10" or slower. About the only bullets that need a 1-8" is 105 berger, 107 matchking & 105 amax. Not sure why this part is hard. "They will not work in mag length ". For those who still don't understand. See pic bellow (amax red tip, the matchking in middle, with VLD. Next to loaded round.). The bearing surface is UNDER THE NECK. The sample loaded round is 58gr vmax loaded exactly 2.26" with calipers showing 2.26.

No need for 1-8 in 6x45 AR unless you just want to loose velocity (waste energy spinning faster than you need) or burn you barrel up faster (faster twist means more torque & longer time in barrel and longer "ride")






494579833_photobucket_60455_.jpg
 
An 85 grain is about as big as your gonna wanna go, any bigger and the velocity will suffer to much. A 1-10 will handle 90 and down easily. Like Mike told me a of couple years ago, "the point of deminished returns"...
 
Im on my phone & thought id try to explain better. Look at the middle bullet (matcking). Its a pulled bullet (tried to load it in that empty case). Look @ the shiney marks. That's the part the neck holds (the only part of bullet that measures. 243".. Note its below the neck of the case meaning it falls all the way in the case when you near 2.26" coal...
 

Just to toss a little water on the fire, I was looking at a
1:9, or a 1:8.5 because I want to keep the prospect of a
100 gr. "hunting" bullet(not a VLD bullet) possibility
open. For one possible use, a heavier bullet is a better
choice over a flatter trajectory, and I prefer the bullet
not hit the target sideways. And I suggested a 1:8.5 because
I saw it offered, and interpreted that to mean it may be a more
common offering than a 1:9. A 1:10, at the lower velocities
of the 6x45 may not stabilize a 100 gr. hunting bullet.
As for the 2.26" limitation, there are mags out there that
can be opened up to 2.8"-2.9", while not a huge gain in
potential COL, it may be just enough to get a 100 gr. SP
loaded. Coleridge, I do appreciate the effort you put
into the exercise to explain how a 100+ gr. VLD bullet
can't be loaded into the 6x45, and make mag length. This
was not news to me, but others may benefit from the
clarification.

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Were can you get these mags????? I didn't think the port for the mag was much bigger than 2.8"? Please diliberate the source. I could get my 75gr HP load to the lands with 2.8".

A 100gr deer bullet might fit in the case @ mag lenth (I would have to try it to make sure but it should). I used to run a 100gr Sierra prohunter in a 1-10" 6BR. I would imagine the it would run in a 1-10 6x45 also, not sure about the slightly longer gameking. Also, there is always a solid if you need penetration...

I don't blame you if you want a faster twist; just because (it's not really going to hurt that much). I've just seen several threads where guys think they are going to shoot a VLD (the BC craze) out of there new 6x45, just won't work.

BTW, I've got a Kreiger 8.5" HV contour coming specifically for the 105 VLD (that's what is setting records in the BR world right now), to be chambered in 6BRX. You won't need that much twist for a short hunting bullet. But again, not a huge disadvantage to spinning things faster than you need...??? Heck, they make a 1-7".
 

TYPO!

Should have been 2.28"
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I take a Dremel to a
Magpul, and IIRC get to 2.28" I think I have a metal
bodied mag(don't recall the MFG.) that is even a bit
longer than 2.28". Sorry about the confusion.
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I knew what you ment. I was just funning ya!


Good luck with the rifle. I'm sure you will very much enjoy it! When you get it, try some Sierra 75gr HP's. They shoot great & @ slower velocities (about 500 FPS slower than the designed 243Win) they kill deer & coyotes dead as a hammer.
 
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