IMO, the Amp declarations represent the last gasp of huge efforts being killed off by far less. Dip annealing is hurting their business..
This thread posted testing shows an affect, which leads to no credible conclusion good or bad. But an apparent affect.
As far as neck tension, there are a few things to consider:
1. We currently have no method to directly measure a neck's hoop tension.
2. Seating force, and various excess interference fitting, means so little in correlation to neck tension, that you might as well drop the notions about them.
3. We do not full anneal brass. We stress relieve it.
4. Any annealing amount changes more than one aspect of our loads. So results before & after are only meaningful with load development before & after.
An analogy:
If you switch from clean to moly coated bullets your MV will drop. It's not because neck tension went down as often thought with lower seating forces (it didn't). It's not because the coated bullets are slipperier. It's because of latent heat of vaporization of moly, cooling and affecting your powder burn rate.
You couldn't just go back & forth between bare bullets and moly coated bullets, and declare one condition 'better' than another. It's not one condition. You'd have to counter cause & effect to isolate results for the 'one' change in consideration.
Lower neck tension from annealing also affects your powder burn rate and tune. So optimum powder burn rate and amount in one neck condition may not be optimum for another. It can't be assumed that any annealing will be the right thing to do. It has to be locally tested/adjusted for to know one way or another.
Folks, we have this sad human condition:
Most paying a lot for promised improvements, will convince themselves of this result -even if total hogwash..
And another human condition:
Intelligence is divided by numbers. The larger the mob, the lower it's understanding of whatever formed it..
There is so much stirring up about annealing lately, that some reloaders are likely worried about it. They may feel like they have to solve this, because they have to do it, because there is so much chatter about it. While truly, some of this won't help them at all.
