Neck tension

[Dave M.]

David's done well tumbling with SS pins.

Case Neck Lube - Bullet Seating

My goal is to spend the most amount of time on the range and the least amount of time reloading. In my pursuit of achieving the greatest level of precision and repeatability, I have been testing which reloading steps provide the greatest benefit versus which ones just take time. IMO, lubing...

forum.accurateshooter.com

David's reloading room:

Team Lapua-Brux-Borden — Big Winners at Berger SW Nationals « Daily Bulletin

Dominators -- that's what these blue-shirted guys were at the 2020 Berger Southwest Nationals (SWN). For the third straight year, Team Lapua-Brux-Borden won the coveted F-Open Team Grand Aggregate award at the Berger Southwest Nationals, finishing with a score of 2584-160X (out of a possible 2600).

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Report from F-Class Nationals in Arizona — LR Team Results « Daily Bulletin

Yesterday was the 1000-yard Team Match Day at the F-Class Nationals in Phoeniz Arizona. It was also Halloween, and there were some very creative costumes on display at the Ben Avery Shooting Facility.

bulletin.accurateshooter.com

David, also treats the necks with graphite and uses Bullets coated with HBN.
Dave

 

[Dave M.]

David, also treats the necks with graphite and uses Bullets coated with HBN.
Dave

Sorry about that, I thought you were talking about David Tubb.

 

[bozo699]

People put too much time and effort into making their brass shiny. It has ZERO positive effects on accuracy. My keys after firing brass are as follows:
1. Anneal after every firing
2. Full length size with bushing
3. Crushed walnut shell tumble for 1HR max
4. Trim to length (every other firing)
5. Minimal inside and outside neck chamfer
6. Deprime
7. Blow out with mild compressor air
8. Reprime by hand
9. Powder charge
10. Seat Bullets using LE Wilson seater, K&M Arbor press, and monitor press in force for anomalies

Dave,
Our regime is almost identical!…. I cringe every time I see a post where someone is ultrasonic cleaning or ss pins!…. Shiny brass don’t win matches!… load development and case prep!
Wayne

 

[Webster]

A little off topic but what the Hell ever became of Fguffy ? Googy as he was ?

I may have scared him off with my picture of a head space gauge. Someone said he is active on another website.

 

[Shooter13]

astly, I’ve recently found higher neck tension provides excellent and repeatable ignition and accuracy (0.004” plus)
Dave

For what? A bolt or AR?

 

[Dave M.]

For what? A bolt or AR?

F-open class bolt guns

 

[Firearmsunlimited]

Oh but it does.

The reason why it matters is that if you use very light neck tension then seat the bullet for any depth resulting in a hard jam the case will likely not hold the bullet in place but be moved by the lands. So your true seating depth might not be what you thought it was.

If you are only touching the lands or jumping your bullet then a light tension wouldn't matter as far as that issue is concerned.

If you have very light NT and the round is chambered and jammed deep enough and then you try to eject that round without firing - maybe you didn't size your brass correctly and it won't seat in the chamber, or you are in a match and they called cease fire, or a simple misfire, etc., then when you eject that case you will end up with a pulled bullet and a mess with your powder.

All I can tell you is to go to a national benchrest match and have one of the top shooter explain to you the mechanics of why they sometimes use a "deep jam" with light neck tension. I have seen Lester Bruno shoot a 25 grand jam. Clearly it would be impossible to jam a bullet into the lands that far. The intension is to in fact have the bullet slide back into the case neck.

 

[M-61]

I thought the OP switched from neck tension neck to shoulder bumping?
Correct terms and clear questions help to get proper answers
Maybe I misread so I’m done

 

[Dave M.]

With a .224 bullet and brass with .014 necks would you use .001 or .002 neck tension? Brass is new and I re-anneal after every 5 firings so spring back isn't a real concern.
Thanks

Bolt action? AR?
I’d use 2.5-3 thou neck tension min for an AR. For a bolt action you may find your rifle likes anything between 1-4 thou neck “tension”