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The 6.53 Creedmoor

Started by Fuj, October 14, 2018, 08:19:03 AM

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Fuj

Quote from: ohiococonut on November 30, 2018, 08:47:54 PMHave you cut a case lengthwise to look at the case wall thickness? The shoulder/taper area in particular. Just curious.

I did that early on with the Federal cases as I was working with the dies.
The shoulder widened out as expected, and to .458, where I wanted it.
The Creedmoor is .462, and the 260 Remington is .454. so it's ball parked
in the middle. Case wall thickness itself showed no thinning. Initially there
was a little thickening in the neck area, but the mandrel I made cured that
with the Alpha brass. The upper body taper will catch up nicely when fire
formed.

ohiococonut

It's not what you take when you leave this world behind you. It's what you leave behind you when you go.

Fuj

.257 project is put on hold till possibly Fall.  Made an
executive decision to transfer project funds back to
FrankenCreed.....Just got off the phone with Brux. In
about 3 months a 29" ss, 6.5 / 7.5 twist, 4 groove blank
will be at my door.....Maybe should start looking around
for 8lbs of R-23 for the powder magazine. Put it right
next to the H4831sc.....Life is good !!

MTMAN

We're always looking for something new on this site! I own a 25WSSM in a Browning A Bolt. Load it primarily with 100 grain TTSX by Barnes at 3150 fps in a 22" barrel. I've taken deer and antelope to 440 yards. They haven't traveled far at all. I assume FUJ wants to load for an AR, so this won't work for that (although I believe there are some out there chambered for the 25 WSSM). That cartridge works well for deer and antelope, haven't tried it on elk yet - have too many better guns for them,  but am certain it will work. Good luck finding good long range bullets for a 25 cal.!

Popeye212

."For that matter, a 257 bullet could probably be paper wrapped and launched out of a 6.5. "  .257 sabot?   Put straw around it and send it. Would not be California compliant.

Fuj

Quote from: Popeye212 on January 16, 2019, 12:33:29 PM."For that matter, a 257 bullet could probably be paper wrapped and launched out of a 6.5. "  .257 sabot?   Put straw around it and send it. Would not be California compliant.

? ? ? ?.....

Mtman.....Not it's not intended for an AR. I only shoot 5.56's in
my RRA's. All development for the new generation of .257's is
slated for a bolt gun. If you read further back, Sierra made the
131gr under license for Black Jack, and another high BC bullet to
be released this summer. More will be forth coming. I prefer the
path less traveled, or breaking trail.