Has anyone has luck forming the hybrid .277 Fury brass to 6.5 or 6mm Creedmoor? Was the juice worth the squeeze? I’m thinking of putting together a 18 to 20” 6mm Creedmoor for coyotes, curious if reformed Fury brass could gain me back some speed from the shorter barrel.
Reforming .277 Fury brass to Creedmoor
- Thread starter Hondo1
- Start date
Post 21 I think
www.snipershide.com
Rechamber 6.5 CM barrel to 6.5 PRC?
I have a Seekins Havak Hit with the quick change barrels and bolt heads. I wanted a 6.5 PRC Seekins barrel but they are OOS, but I do have a 6.5 CM barrel for it. Can a 6.5 CM barrel be rechambered to 6.5 PRC without being set back? If all I had to do is have my gunsmith run a PRC reamer in...
www.snipershide.com
I've reformed some of the Hybrid 6.8x51 military cases into .308 Win. So far, so good...
Yes, I refrom hybrid 277 cases to many calibers. One being the 6.5 CM, I don't have a 6 CM, I'm a 6 Dasher fan.
I have described process in detail on this site, you can look it up it's been repeated many times to individuals.
I haven't ran varmint bullets in mine...just 140 gr, at 3100 fps & around 3000 fps for 147 gr, & 150 gr SMK is my favorite. Plus a few 153 Atips.
It's 24 factory barrel, but have a 26" Bartlein ready.
The powder that shines on the heavys is scarce, RL26...but a few others will get by.
As a varmint rifle with light bullets you lose velocity quickly with short barrels. Heavy bullets lose less velocity as barrels get shorter. So is it worth it for varmints, probably up to you, and your hunting style.
You'd probably gain a 100 to 150 fps, if that's important enough to mess with it is up to you.
I ran the 308 with hybrid cases with lighter bullets in different barrel lengths, but mostly in 22" Varmint SA, & 30" target long action.
110 gr 3400, 130 gr 3300 155/ 150 3100 in 22" (3200 in 30" ) 168 Berger 2960 fps
200 2800 fps (200 gr 2900 fps in 30")
225 gr 2709 in 30," in hybrid cases ....230 gr Atips 2620 fps in Lapua cases in 30"
If ya don't get the right powders the velocity doesn't go up as fast but the pressure does.
I run a 358 win over 3700 fps in a 16" AR 10 for close range varmints, same very light bullet over 2600 fps in 9mm 16" AR 15 ...inside a 100 yds and 33 rds to do it....the 9 mm bunny slayer extraordinaire, don't even have to worry about losing cases and no hybrid cases needed.
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Have you tried any VV powders in these as an alternative to RL26 ?Yes, I refrom hybrid 277 cases to many calibers. One being the 6.5 CM, I don't have a 6 CM, I'm a 6 Dasher fan.
I have described process in detail on this site, you can look it up it's been repeated many times to individuals.
I haven't ran varmint bullets in mine...just 140 gr, at 3100 fps & around 3000 fps for 147 gr, & 150 gr SMK is my favorite. Plus a few 153 Atips.
It's 24 factory barrel, but have a 26" Bartlein ready.
The powder that shines on the heavys is scarce, RL26...but a few others will get by.
As a varmint rifle with light bullets you lose velocity quickly with short barrels. Heavy bullets lose less velocity as barrels get shorter. So is it worth it for varmints, probably up to you, and your hunting style.
You'd probably gain a 100 to 150 fps, if that's important enough to mess with it is up to you.
I ran the 308 with hybrid cases with lighter bullets in different barrel lengths, but mostly in 22" Varmint SA, & 30" target long action.
110 gr 3400, 130 gr 3300 155/ 150 3100 in 22" (3200 in 30" ) 168 Berger 2960 fps
200 2800 fps (200 gr 2900 fps in 30")
225 gr 2709 in 30," in hybrid cases ....230 gr Atips 2620 fps in Lapua cases in 30"
If ya don't get the right powders the velocity doesn't go up as fast but the pressure does.
I run a 358 win over 3700 fps in a 16" AR 10 for close range varmints, same very light bullet over 2600 fps in 9mm 16" AR 15 ...inside a 100 yds and 33 rds to do it....the 9 mm bunny slayer extraordinaire, don't even have to worry about losing cases and no hybrid cases needed.
No N560 runs the pressure up too fast for the extra velocity but it will get ya part of the way.
RL 26 is powder for the hybrid 6.5 CM case.
Pressure is reasonable enough to give you a cushion and velocity is high.
The powder in the 80,000 psi hybrid Fury case took over 60 tries to get the formula/ blend just right for one particular armor piercing bullet designed to defeat Russian body armor,....and was classified top secret during development.
So we're lucky to have RL26 because it's that good in this narrow application.
Last time I got it it was $53 per lb now if I find it it's 65-70 dollars per pound.
Superformance might be worth a try but it's pretty fast for this application but can yield good velocities, but how will it react as the pressures climb.
I actually have an extra Bartlein barrel ready to go.
But I've built quite a few other projects I'm working on, and involved with, 510 whisper, 8.6 blackout, 338 ARC, 338 Spectre, only the 338 ARC is not built, the chamber reamer has not arrived... so I stopped messing with the 6.5 CM for a while, but I would suspect barrel life has to be a bit less.
Probably slightly more than 6.5 PRC, but that would give you an idea of what to expect.
Barrel life is always an iffy guess, because so many things influence it, like barrel material, barrel making process, shooting very hot barrels, cleaning, and ones perception of accuracy differs from person to person.
Plus not all the rounds one fires has to be the high pressure high performance rounds, unless you want to.
But I've built quite a few other projects I'm working on, and involved with, 510 whisper, 8.6 blackout, 338 ARC, 338 Spectre, only the 338 ARC is not built, the chamber reamer has not arrived... so I stopped messing with the 6.5 CM for a while, but I would suspect barrel life has to be a bit less.
Probably slightly more than 6.5 PRC, but that would give you an idea of what to expect.
Barrel life is always an iffy guess, because so many things influence it, like barrel material, barrel making process, shooting very hot barrels, cleaning, and ones perception of accuracy differs from person to person.
Plus not all the rounds one fires has to be the high pressure high performance rounds, unless you want to.
I recently took on this endeavor of re-forming 277 Fury to 6.5 Creedmoor. The brass I got had the mouths beat up pretty badly. I threw it in the tumbler to clean it up, then lubed it and ran it through a 7mm-08 full length sizing due with the de-cap/expander ball removed. I probably should have annealed before I did this step but I didn’t and I ended up with a few dings or wrinkles in the shoulder on some of the brass. Then I trimmed the brass to the same length as a Creedmoor case. Chamfer and de-burr it. After that I cleaned the brass and ran it through my annealer. Then ran it through a RCBS full length sizing die setup to just bump the shoulder back 2-3 thou to make it match my chamber. I found that if I partially ran the ram up pulled the expander ball back through and then ran it all the way I seemed to get better brass through it without as many damaged shoulders. After that I cleaned off the lube and put some primers in, loaded up some charges and then seated the bullets as far out as I could. I got a lot of freebore on this Browning chamber so I seated them as long as I was comfortable going in the magazine. I think I ended up at 2.890 COAL.
Now take this all with a grain of salt as I have been reloading off and on for quite some time and can usually produce good ammo for my standards. I’m no F class shooter and my equipment is very basic though. I’m sure there is a better process. My next upgrade will be a SAC die with some different neck bushings.
Now take this all with a grain of salt as I have been reloading off and on for quite some time and can usually produce good ammo for my standards. I’m no F class shooter and my equipment is very basic though. I’m sure there is a better process. My next upgrade will be a SAC die with some different neck bushings.
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That is some ugly brass.
And totally unacceptable, especially if your gonna try to push the pressure.
Throw it away and start over.
Stop when ya screw it up and determine what you are doing wrong.
Insanity is to keep going.
If you follow directions they come out perfect...as I have laid out the process many times.
It's not hard to make hundreds of excellent cases.
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Yea they’re not all wrinkled. Appreciate your opinion, and I do plan on buying some more and trying again. I know some of it isn’t the best and I don’t plan on loading those. My first loads aren’t even pushing pressure yet. I will say yes yours are shinier than mine, but mine are annealed. I’m not worried about how shiny the outside is. I checked the neck on them all and checked the headspace on them all and they’re all the same, atleast as far as my equipment can measure. I would call that acceptable to load. Why don’t we wait and see what the outcome is before we jump to conclusions. Who knows, you might be right!
I anneal them too but neck turn them all to eliminate the donut area in the neck shoulder junction. To get a no pressure points to spike pressures as one begins to push pressures upward.
They are final polished not needed but looks good, so anneal does not show.
I want people to experience the extra performance safely making good cases with no pinch points is important for performance and accuracy.
Probably be prudent to fire the first reloaded rounds at normal pressures to get them formed and check out your loading practices.
Then begin the push with the fired cases.
I do this on an industrial scale with
machine tools, regardless of caliber.
Bridgeport mill cuts off a half inch of brass in a second or two.
Lathe 308 here, with carbide ground tool for neck turning, the neck, the radius which is sharper the spec to help remove the donut, and the shoulder angle.
About 600 6.8 X 51 hybrid cases ready for processing to other calibers.
A pic of a no donut case notice the full machined neck, radius, & shoulder.
This is 6.5 PRC necked and machined to 338 RCM for an AR 10, but all hybrid cases get this treatment. The results is an AR 10 capable of 1/2" groups.
You will get excellent accuracy and high performance out of 6.8 X 51 hybrid cases shortened & necked to 6.5 CM if you make really good cases.
Hand tools are more tedious so use power whenever ya can...but most can be accomplished with hand tools.
The quality of the formed cases is up to the individual, but will reflect on the cartridges performance and accuracy.
Ya get out what ya put in.
