Thread: 6x45 Rem barrel

not sure if Ive mentioned it before,letting the spring tension off bolt when its in storage is a good thing....I had a few misfires early on untill mate put me onto doing it,may just have been hard primers but never had issues again....has added bonus that a bofin cant fit bolt into rifle.
my .223 took the baa out of two house muttons tonight,them hornady bulk pack 55grn loads sure do make thier eyes pop out nicely.

Finally fitted up the last 6mm barrel on the Sako Vixon this afternoon. I had pre machined and chambered the barrel to streamline the process but murphy thew a few curveballs as usual.





After removing the old .223 barrel and fitting the 23" blued chromolly barrel the Stug stock barrel channel needed a little more inletting to clear the slightly heavier barrel.

Then it was off to the chrono with a few test loads.
Unfortunately there was an issue with a week firing pin spring that needed sorting before we could proceed.
After a bit of fluffing around I made up a temporary spring spacer to preload the firing pin a bit more as a temporary measure until the spring is replaced.
My load for my CZ 527 of 26.5gr of H4895 and a 75gr Sierra HP shot 3020fps in it and showed a little pressure, probably due to the faster 1-10" twist so I backed it off to 3000fps with 26gr of H4895 which looked pretty good.
Loaded up 6 rounds in newly formed PMC brass with a BR-4 primer and took it to the range.
I was handicapped by a 7 power loopy and didnt have any 30mm Sako rings on hand to swap it out with something bigger so just made do. There was a light wind but not enough to use and an excuse.
1 shot to sight it with a quick adjustment followed by 5 more gave an acceptable half MOA group.
With some larger optics and a bit of time spent in brass prep and loading this one will be a tack driver.

hmmm maybe what I posted above couldve helped prevent the issue in first place LOL.
tidy grouping as always.

Thread revival time, hope @Wingman doesn't mind me using it.

Just did a test fire of a few rounds with my latest 6x45mm creation. Made up from a Sako A1, used Bartlein 6mm 1:8 2B barrel at 20", DPT and Swaro 3-9x40 4A. Desert Guns NZ did the work for me, really happy with Marks skill again.
Wasn't sure how the 1:8 would go with the lighter 75gr loads, nothing to worry about there! The 85gr HPBT Sierra shot equally as well, though I cocked up a good group at the end. I'm not a good paper shooter.
75gr HP Sierra's & H335 were most happy at 2980fps average, 85gr HPBT's & CFE223 at 2796fps average. ES on both were nothing flash and I should be able to lower them with better case prep and seating.


75gr 3 shot group 7.5mm


85gr 3 shot group 11.5mm with average shooting from me

Mind? Absolutely not.. the more that share their 6x45s on this thread the better. It will make for a good reference thread for others for years to come.

Nice looking build? What made you go with such such a fast twist with a very limited COAL in the Sako?

Originally Posted by Wingman

Mind? Absolutely not.. the more that share their 6x45s on this thread the better. It will make for a good reference thread for others for years to come.

Nice looking build? What made you go with such such a fast twist with a very limited COAL in the Sako?

Cheers.
Barrel became available at the right price from a mate, so that confirmed it. My other Sako 6x45 is on a 1:10 but 23" long and it shoots both these weights in similar fashion, though a bit faster. I was intent on having a shorter more compact gun with this one and there room to go shorter without issue. I'm used to the COAL of these Sako's, to me, its the only negative and all else outweighs this.

mean lookin rig Mathias👍😎 this thread is 🤤🤯😳

Ive been saving this box load of 650x Black Hills match brass to neck up and load for mine on a rainy self isolating day..

I shorted my 6x45 barrel down today from 22" to 20" and re threaded/crowned it..

Originally Posted by Mathias

Thread revival time, hope @Wingman doesn't mind me using it.

Just did a test fire of a few rounds with my latest 6x45mm creation. Made up from a Sako A1, used Bartlein 6mm 1:8 2B barrel at 20", DPT and Swaro 3-9x40 4A. Desert Guns NZ did the work for me, really happy with Marks skill again.
Wasn't sure how the 1:8 would go with the lighter 75gr loads, nothing to worry about there! The 85gr HPBT Sierra shot equally as well, though I cocked up a good group at the end. I'm not a good paper shooter.
75gr HP Sierra's & H335 were most happy at 2980fps average, 85gr HPBT's & CFE223 at 2796fps average. ES on both were nothing flash and I should be able to lower them with better case prep and seating.

Attachment 133525
75gr 3 shot group 7.5mm

Attachment 133526
85gr 3 shot group 11.5mm with average shooting from me

Attachment 133527
Attachment 133528

Geez a lot of that rifle looks vaguely familiar


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@Wingman what did the 2" do to speeds?

Originally Posted by Tommy

@Wingman what did the 2" do to speeds?

Not sure yet, Ill give it a crack over the chrono tomorrow.

Originally Posted by Wingman

Not sure yet, Ill give it a crack over the chrono tomorrow.

20"..... Sounds like about right aye

Originally Posted by Tommy

20"..... Sounds like about right aye

Yeah Im a fan of 18"to 20" with a suppressor. This one is a slower 1-14" twist so gets good velocity over the 1-10" twist with the same load.
I settled on a 75gr HP load at 3020fps.

You might loose quite a bit of speed cutting your 1-10" from 23" to 20".

Originally Posted by Wingman

Yeah Im a fan of 18"to 20" with a suppressor. This one is a slower 1-14" twist so gets good velocity over the 1-10" twist with the same load.
I settled on a 75gr HP load at 3020fps.

You might loose quite a bit of speed cutting your 1-10" from 23" to 20".

Gah!