Speaking of neck tension (IF)

justinp61

Well-Known Member
Joined
Jul 31, 2011
Messages
198
Maybe I'm measuring it wrong. I measure the outside of the case after resizing and after seating the bullet.

The .247" bushing acme today, measuring the outside it's now .004".
 

justinp61

Well-Known Member
Joined
Jul 31, 2011
Messages
198
Someone please correct me if I'm wrong with this thinking.

If you take two calibers, say a .22 and a .30 and use .002 IF for both and assuming the same seating depth the force to pull or force the bullet out of the .30 caliber will be more due to greater surface contact area?
 

Mikecr

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Joined
Aug 10, 2003
Messages
5,549
Location
NC, oceanfront
All else equal, yes. You got it.

It's ridiculous for so many to misnomer interference with tension, as there are more attributes affecting tension than mere interference.
It's similar to relating case weight alone with capacity, or holding base to ogive (BTO) alone with any particular notion of meaning.
Same problem really, and the bigger a mob following, the lower it's ability to accept correction (a counter momentum).

This can be overcome, but I can tell you from experience that it takes decades of effort to influence actual change.
 
Last edited:

Old rooster

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Joined
Jan 9, 2019
Messages
402
Location
Montana
The way this was explained made sense to me.
When you do something wrong for so long and get acceptable outcomes change is hard but not impossible.
Thanks to all for teaching an old dog new tricks!
Old Rooster
 

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