257ted

J

JohnsonGunsmith

Guest
Just curious about the 257TED is it patented and if not anyone have a reamer print? Is it an improved version of the Grendel or just a necked down Grendel case? I am very interested in playing with it I tried a 6.5 Grendel 13 twist 85 grain billets in competition and found it to have great potential but no really good light weight bullets (at the time). With the ted the 88grain BIBs give me what I need in this case so I really want to give it a go.

I know someone on here shoots one here in Texas I believe I would love to know more.

Thanks

Brandon J.
 
Just curious about the 257TED is it patented and if not anyone have a reamer print? Is it an improved version of the Grendel or just a necked down Grendel case? I am very interested in playing with it I tried a 6.5 Grendel 13 twist 85 grain billets in competition and found it to have great potential but no really good light weight bullets (at the time). With the ted the 88grain BIBs give me what I need in this case so I really want to give it a go.

I know someone on here shoots one here in Texas I believe I would love to know more.

Thanks

Brandon J.

Brandon, my memory is vague regarding the case design: Ted Heckermann, Austin, TX, was the originator. I believe it was simply a PPC, with the shoulder 0.075" forward, and a 0.285" neck diameter, and maximum OAL of about 1.520".

From the fall of 2007 through late summer 2014, Ted purchased a good many of the 88 Gr. .25 Cal. BIB - both FB & BT versions - from 2010 on, all BT. The 257Ted worked well for Mr. Heckerman. Due to health dilemma, I lost touch with him, and many more memories in 2011 - just lately, many recollections are percolating back into play! I hope he, too, is alive & well! :eek:

While I doubt that his design would be considered proprietary, I'd recommend that you try to contact Ted for the particulars. If that fails, I seem to recall Ted sharing his reamer print with me - I will try to dig it up - for that, you'll have to e-mail me: bibrob@minburncomm.net , and give me a few days to rummage around.

That said, today, with the LAPUA Grendel brass available, I'd recommend simply necking that case down, without any shortening, and eliminate die issues: via .25 Cal. expansion ratio, you'll be able to capitalize on the slightly larger case capacity, via wider powder selection. I've enjoyed great success simply necking the 6.5x47 Lapua down to .25 Cal for hunter Class, and .25BR for group and VfS events - odd, but competitive.;)

Just take note: ys gotta be nutz to shoot a .257!:eek::p RG
 
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257 Grendel

Brandon, my memory is vague regarding the case design: Ted Heckermann, Austin, TX, was the originator. I believe it was simply a PPC, with the shoulder 0.075" forward, and a 0.285" neck diameter, and maximum OAL of about 1.520".

From the fall of 2007 through late summer 2014, Ted purchased a good many of the 88 Gr. .25 Cal. BIB - both FB & BT versions - from 2010 on, all BT. The 257Ted worked well for Mr. Heckerman. Due to health dilemma, I lost touch with him, and many more memories in 2011 - just lately, many recollections are percolating back into play! I hope he, too, is alive & well! :eek:

While I doubt that his design would be considered proprietary, I'd recommend that you try to contact Ted for the particulars. If that fails, I seem to recall Ted sharing his reamer print with me - I will try to dig it up - for that, you'll have to e-mail me: bibrob@minburncomm.net , and give me a few days to rummage around.

That said, today, with the LAPUA Grendel brass available, I'd recommend simply necking that case down, without any shortening, and eliminate die issues: via .25 Cal. expansion ratio, you'll be able to capitalize on the slightly larger case capacity, via wider powder selection. I've enjoyed great success simply necking the 6.5x47 Lapua down to .25 Cal for hunter Class, and .25BR for group and VfS events - odd, but competitive.;)

Just take note: ys gotta be nutz to shoot a .257!:eek::p RG

Wow I am always surprised at who I get to talk to on here. The 257 Grendel was what I was thinking. I like to spend my time shooting instead of working brass for sure now with a young family.
Your 25 BR what do I need to do for the lead and throat measurements for your 88 grain bullets. Also what do you like the fb or bt bullet in your BR? I am more concearned with accuracy and tuneability than ballistic coefficient because I want to make it win. I know this is going to set some off on a can't beat the ppc rant but I don't care. I will go as far as saying the ppc will be replaced someday by another cartridge if for no other reason than everything changes and progresses.
Ok now that I have ticked off a large portion of the Benchrest community I will go order my 25 caliber barrel and som fine BIB bullets and probably never make an impact on the 6ppc. However I will sure have a lot of fun doing it!
 
Wow I am always surprised at who I get to talk to on here. The 257 Grendel was what I was thinking. I like to spend my time shooting instead of working brass for sure now with a young family.
Your 25 BR what do I need to do for the lead and throat measurements for your 88 grain bullets. Also what do you like the fb or bt bullet in your BR? I am more concearned with accuracy and tuneability than ballistic coefficient because I want to make it win. I know this is going to set some off on a can't beat the ppc rant but I don't care. I will go as far as saying the ppc will be replaced someday by another cartridge if for no other reason than everything changes and progresses.
Ok now that I have ticked off a large portion of the Benchrest community I will go order my 25 caliber barrel and som fine BIB bullets and probably never make an impact on the 6ppc. However I will sure have a lot of fun doing it!

You certainly will not make a good lemming!:eek:;)

I already located the 257Heck (not Ted) print, dated 5/6/2005; Pacific Tool moniker - drawing by Dave Kiff, checked by A. Kiff. Some of the memory bank was correct: .285" neck diameter; OAL 1.518" (ok, at 1.520", I was only close). Free-bore is 0.060", throat angle (terminology per drawing) 1Deg. - 30 min. (3.0 deg. included) which is perfect. My 25BR reamer has the same throating, but features .283" neck diameter. Specify that the free-bore diameter (on a Kiff drawing, lead), be NOT LESS than .2575", and live with anything within tolerance over that! :eek:

When Bill Niemi made the dies, I got both FB and BT, as I knew the lack of demand [for .25 Cal bullets] would allow more time for experimentation/comparison. I was surprised that the BT produced the same precision level as the FB - I was prejudiced, and did not expect that!:eek: Therefore, I have used mostly the BT version, and that is what I sell the most. They - BT/FB - don't necessarily "like" the same powder charge . . . I have been advised by several, that the 88s are, "as good as, or, better than", the 25 Cal. GOLD STANDARD - the 87 Gr. Fowler: of that, I am proud, and honored.:cool:

In the early 1990s, the attempt to resurrect the .25 Cal. was polluted by the lack of understanding of twist rate requirement(s) - as the shorter jackets became unavailable, and makers simply went to the next longest jacket, while maintaining the SAME weight and twist: a wreck was in the making.:( People incorrectly blamed jacket quality as opposed to the inadequate twist rate - later, a few people figured this out. It took a good deal of pleading with Bill Niemi before he agreed to make 25 Cal dies for me - he didn't want a disappointed customer! ;) So, I purchased a bunch of jackets, measured the wall-thickness uniformity (which was EXCELLENT - 0.0002" or, <), and sent them to Bill for approval . . . he agreed with my measurement, and a few months later, I had a set of dies!

Ok, for the 88 BT you need a minimum of 1:12" (Sg 1.4 at STD. sea-level conditions); from the same twist, the FB exit the muzzle at Sg 1.5 - right where the GURUS want it!:D With BR quality bullets, a faster twist-rate will not measurably errode precision. All else being equal, the addition of a BT, will increase the twist-rate requirement by about 3/4"; e.g. "ideally" (where Sg 1.5 is ideal), the correct twist rate for the 88 BT would be 1:11.25". My latest .25BR barrel is a Bartlein 1:10", chambered for me by "Humble Henry" Rivers - if it doesn't SHOOT, that's who I'll blame!:eek: Bed time!:p RG
 
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Thank you very much for all the information. I wish I would have started off with the 257 instead of 6.5. Expect a bullet order soon. I will go with the suggested tighter twist and the boat tail bullet. Again thanks for all the help I am always amazed at how nice people in Benchrest are.

Thanks
Brandon J.
 
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