Thin to win?

[JCardenas]

I just wanted to ask you guys about going with a thinner neck say .262-264 vs .266-.268. I saw a video where a short range bench shooter mentioned go
Thin to win. I see a lot of the ppc guys go with really thin necks and was wondering if that transferred over to the long range game. I am going to order my first reamer and was wonder about neck thickness. It will be for a dasher to shot 105's. Thanks for any input.

 

[ShootDots]

I just wanted to ask you guys about going with a thinner neck say .262-264 vs .266-.268. I saw a video where a short range bench shooter mentioned go
Thin to win. I see a lot of the ppc guys go with really thin necks and was wondering if that transferred over to the long range game. I am going to order my first reamer and was wonder about neck thickness. It will be for a dasher to shot 105's. Thanks for any input.

I turn my necks to 12K neck-wall thickness, on my Dashers. This BARELY allows for a .266 bushing or honed neck to grab with LESS THAN 1K neck tension. T-Rust me, that works, at least for me..

 

[T 700]

go with a No turn neck, it will shoot fine!

 

[Scott Harris]

A .271 chamber neck would allow no-turn brass or you could turn the brass and that also would work great with the same chamber. If you want maximum accuracy, then I would plan on turning enough brass for a 100% neck clean-up. Anything more is personal preference.

Neck thickness and clearance between chamber and brass is subject to a variety of opinions, but I would not have less than .002 clearance between case neck and chamber under any circumstances. Less clearance can lead to safety issues and does not increase precision versus more generous numbers: .004 clearance for example.

Another consideration, thicker brass is tougher brass. It does not get dinged up so easily.

 

[LHSmith]

Although .262 PPC necks have been the most common on the short range BR circuit, the thin necks have two serious drawbacks: they dent easily and they lack the ability to hold neck tension over multiple loadings. Truth be known, many competitors are migrating to the .268/ .269 neck for those reasons and they are just as competitive. Reading recent Benchrest Central posts by some well known competitors have confirmed this movement away from the ultra-thin necks.
For serious competition in registered matches ( speaking about short range only), I doubt you will ever find a "no turn" fair very well. Cartridge production methods simply can't produce the uniformity needed to ensure consistent neck tension.

 

[afrench]

what Mr. Neary was discussing during that part of the video is making sure you have enough clearance between loaded round measurement and chamber/neck dimension.

in the past, lots of short range BR guys would cut the neck thickness to only allow about 1 thou clearance between loaded round diameter and chamber dimension in the neck.

so, the thin to win thing means, cut your necks to a thickness that will allow a bullet to slip back inside a fired case.

 

[Shynloco]

.......thin necks have two serious drawbacks: they dent easily and they lack the ability to hold neck tension over multiple loadings. .....

Cartridge production methods simply can't produce the uniformity needed to ensure consistent neck tension.

+1. I don't compete but have found the above comments are very true and real. Which is why I only do "clean up" turns anymore and have found my brass last longer. And I have been told the same thing by some top shooters who do compete who simply say, don't turn brass needlessly.

Alex

 

[Hoier]

Jaime

Run a .268. I think it's probably the most popular after a no turn.

 

[JCardenas]

what Mr. Neary was discussing during that part of the video is making sure you have enough clearance between loaded round measurement and chamber/neck dimension.

in the past, lots of short range BR guys would cut the neck thickness to only allow about 1 thou clearance between loaded round diameter and chamber dimension in the neck.

so, the thin to win thing means, cut your necks to a thickness that will allow a bullet to slip back inside a fired case.

I see, that makes sense. I thought he was talking about thinner walls.

Thanks

 

[JCardenas]

Jaime

Run a .268. I think it's probably the most popular after a no turn.

Thats what I am running now Nick. I think it's enough to clean the necks and still have a enough thickness to avoid those dings.

 

[BoydAllen]

As the previous poster mentioned, evidently you misunderstood what Jack was saying. He was making the point that using around.003" for loaded round neck clearance, for a PPC, has given him better accuracy, especially at 200 yards. He was not speaking to the issue of chamber neck diameter at all.