The Fix from Q

#4,551
7 shots through one hole @ 100 yards. Wrap it up and go home because it's not going to get much better than that :)

This is a 6.5 Proof Research barrel. It seems to be getting better the more I shoot it.

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#4,552
Rootshot said:
I received the barrel this evening and re-assembled everything. I'm happy to report that feeding is night & day better than before. Bullet tips slide along the polished chamfer into the chamber with no visible damage. Case closed on this issue!
Click to expand...
As a follow-up. When I shoot this rifle now, my concentration isn't being broken anymore by crappy feeding. If you have feeding issues, I strongly suggest you send your barrel to @Supersubes to have him fix and polish the chamfer into the chamber. Huge positive difference!
 
#4,553
Rootshot said:
As a follow-up. When I shoot this rifle now, my concentration isn't being broken anymore by crappy feeding. If you have feeding issues, I strongly suggest you send your barrel to @Supersubes to have him fix and polish the chamfer into the chamber. Huge positive difference!
Click to expand...

Have you, or anyone else, heard about anyone doing 6.5 PRC out of the Fix? Not sure what all you would need other than a barrel and bolt head, but I think I've seen them mention interchangeable bolt heads on the mini Fix. Haven't really looked if that also applies to the 308/6.5 Fix.
 
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#4,554
minorsubplot said:
Have you, or anyone else, heard about anyone doing 6.5 PRC out of the Fix? Not sure what all you would need other than a barrel and bolt head, but I think I've seen them mention interchangeable bolt heads on the mini Fix. Haven't really looked if that also applies to the 308/6.5 Fix.
Click to expand...
Im gonna say no on that. Just not going to work with the this design. Look into a light action like an defiance AnTi and MDT’s new folding carbon chassis.
 
#4,559
I finally found everything I needed to start reloading (complete newb here, but have done a ton of reading!) and so went through the process of figuring out my COAL and length to Ogive for the Fix (16” 6.5cm with a Thunder Chicken) before figuring out that the stock SR25 PMAG it comes with seems WAY too short to fit what would be 20-40 thou off the lands, which is what I see recommended by Hornady, Berger, and others. I measured 2.868 with a split case and Berger Classic Hunter 135gn, and 2.9305 with the Hornady gauge, and the PMAG looks to be around 2.832. Are people running different mags in the Fix? Does it make a big enough difference to be worth it? My particular fix shooting
F73B4331-943F-4007-8BAC-03A32476FE84.jpeg
from bags seems to hate Factory American Eagle 120gn (huge groups) but I was able to get a decent group with 44.5gn of Ramshot Hunter, the 135gn Bergers, Lapua brass, and CCI 400s, but nowhere near as accurate as what I’ve seen other people post. Just wondering how much I should pursue longer COAL mags (Knight’s for example) versus trying to locate other powders to try. It’s so hard to find components now and I was starting from zero, so as much fun as I’m having trying different loads, I should probably focus where the most potential gains might come from.... This afternoon I did cook up a set of 5 rounds with 44.5gn RamShot Hunter @ 2.830 for the stock PMAG and then another 5 with 44.5gn but at 2.860 that I will chamber by hand to see if the longer OAL made them group tighter. I feel like that may not be a valid comparison, because maybe with more room in the case, more charge might be needed to maintain the same pressure, so the longer OAL may actually make for worse groups with 44.5gn but could be tighter with a higher charge. Or something... I haven’t shot them yet, so I guess I’ll see what happens.
I also have some Winchester “6.5” that I haven’t even looked up the load data for yet...
So are people using different magazines? If so, what is the best and where can you find them?
 
#4,560
LiveFreeOrDieBob said:
I finally found everything I needed to start reloading (complete newb here, but have done a ton of reading!) and so went through the process of figuring out my COAL and length to Ogive for the Fix (16” 6.5cm with a Thunder Chicken) before figuring out that the stock SR25 PMAG it comes with seems WAY too short to fit what would be 20-40 thou off the lands, which is what I see recommended by Hornady, Berger, and others. I measured 2.868 with a split case and Berger Classic Hunter 135gn, and 2.9305 with the Hornady gauge, and the PMAG looks to be around 2.832. Are people running different mags in the Fix? Does it make a big enough difference to be worth it? My particular fix shootingView attachment 7617045 from bags seems to hate Factory American Eagle 120gn (huge groups) but I was able to get a decent group with 44.5gn of Ramshot Hunter, the 135gn Bergers, Lapua brass, and CCI 400s, but nowhere near as accurate as what I’ve seen other people post. Just wondering how much I should pursue longer COAL mags (Knight’s for example) versus trying to locate other powders to try. It’s so hard to find components now and I was starting from zero, so as much fun as I’m having trying different loads, I should probably focus where the most potential gains might come from.... This afternoon I did cook up a set of 44.5gn Ramshots @ 2.830 for the stock PMAG and then another 5 with 44.5gn but at 2.860 that I will hand-load to see if the longer OAL made them group tighter. I feel like that may not be a valid comparison, because maybe with more room in the case, more charge might be needed to maintain the same pressure, so the longer OAL may actually make for worse groups with 44.5gn but could be tighter with a higher charge. Or something... I haven’t shot them yet, so I guess I’ll see what happens.
I also have some Winchester “6.5” that I haven’t even looked up the load data for yet...
Click to expand...
I’m running KA mags and can eek out a little more COAL.
 
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#4,561
Kac and Larue still only get you to 2.86-87". I say load them mag length and try it. It'll surprise you sometimes.

Also as to not getting the accuracy you see from others. I have an original 22" Bartlein 6.5. It hammers with 140eld and 143eld-x. Truly .5moa or slightly better. I have a 16" CF 6.5 barrel and a Bartlein 16" 308. With the light barrels it's not very forgiving . Still very capable of great accuracy but it takes a little extra effort.
 
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#4,562
Load them to mag length and see how they do. I load to mag length in both of my fixes and they’re both sold 1/2” or better typically (both wear proof carbons though). My factory stainless 308 barrel wouldn’t shoot that good FWIW.
 
#4,564
What twist are you guys running on your 16-18” proof barrels for 6.5? Way to many options now haha.

I agree with the above. I’ve got 1300ish through the OG Bart 22” and love it. Eldx/m it eats them. Ready to try a proof out.
 
#4,565
Gotlag1789 said:
What twist are you guys running on your 16-18” proof barrels for 6.5? Way to many options now haha.

I agree with the above. I’ve got 1300ish through the OG Bart 22” and love it. Eldx/m it eats them. Ready to try a proof out.
Click to expand...
Only two twists for proof prefits, 7 and 8, and only the 16” comes in 7. So all you have to do is pick a length.
 
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#4,573
bachelorjack said:
No. Its to have the functionality of a thicker barrel without having the weight which comes with it.

This functionality of a thicker barrel is beneficial when you are running a suppressor.

Longer barrels and cans suck
Click to expand...
You got me all jazzed up. I want one. Do you have a pic of one of your barrels and the full length rail?
 
#4,577
Supersubes said:
Is that like a beer coozy, but for a rifle? That would be the bees knees for when I snuggle my Fix.
Click to expand...
Yes. Sort of.

There is a full length arca rail mounted on the bottom of the handguard. Then that neoprene sleeve over it. Was a cover for a crappy aluminum tube ar handguard. Someones wife made them an extra and I got it.

Its purpose is to keep the window sill on my Lexus from getting dicked up. Or my hand from freezing when its cold as balls.

The flat arca and gey cover is perfect for what I use that Fix for...
 
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#4,580
How does the proof barrel do with prolonged shooting? I have the 22in creed bartlein and it’s too front heavy for my taste


i got a 16in 308 in a deal and put it on but haven’t shot it. I am worried it’s two thin to do a shooting course with
 
#4,588
cleric said:
Sorry. I am talking 300rounds in a day in a hotter setting while still maintaining accuracy.

I don’t know if I want to buy a 6.5 barrel if I think I am going to want a 8.6 creed
Click to expand...

I have been loading up some 8.6 rounds in anticipation of the barrels coming in. It is an interesting round. I have great hopes for it.

ILya
 
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#4,591
koshkin said:
I have been loading up some 8.6 rounds in anticipation of the barrels coming in. It is an interesting round. I have great hopes for it.

ILya
Click to expand...

If you guys have free time and don't mind Podcasts, the one from Q is probably my favorite of firearm related podcasts.

Recently they covered the field testing of the 8.6BLK and talked about some of the results of the testing that were pretty fascinating to hear about. I am just reposting their numbers, so please don't take these as my calculations or statements:
  • Typical 308 projectile out of a 16" barrel, 1:10 twist is around 150,000 - 200,000 RPM
  • They are quoting 500,000-750,000 RPM with their extremely fast twist (1:3) with 8.6; they are claiming that this rotational velocity adds a significant energy / effect on target vs. more conventionally slower twist barrels.
  • They were testing 1:1 twist barrels that were spinning apart jacketed projectiles so they dialed it back; more interestingly, the rotation was so rapid with a 1:1 twist that the projectiles were actually rotating supersonic (and therefore making the cracking noise) while still moving subsonic linearly downrange.
  • The 1:3 fast twist spins the projectile so fast that the spin drift (with the supersonic loads) is exaggerated pretty greatly at distance; at ~400m it adds 1.5 mil of windage based on rifling direction.
 
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#4,598
Overlord66 said:
What ring height is everyone using? I'm mounting a Mk5 3.8-18x44 and find the 1.06 ring height of the mark 4 rings to be a little low.
Click to expand...

i use the MPA 1.25” 20moa mount. works great for me. for a larger objective lense diameter i had to use a 1.5”. the pictures are almost 3 years old
BF41B335-7CFA-4A38-A8BD-4E65BBADAEAD.jpeg
years old, i can grab a better one if you need.
8C4C6B50-1CEF-47BB-AE5C-896CC014554C.jpeg
 
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#4,600
I am picking up my Fix 6.5 (16") today from the FFL. Thunder Chicken came a couple of weeks ago. I don't have a day scope yet- lots of good ideas on here. I'll probably put the Swarovski 1-6 (only day scope I own) on it just to try it out 100-200 yards. Lots of good scope discussion on here. Most of my hunting will be with thermal. I have tried to google around for an Arca attachment for a tripod. So far all I am finding is a really old group buy and a rail someone printed a few extra and sold. Any direction/input on an arca rail attachment is appreciated!
 
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