difference between primers?

[Remo-99]

Proof to me that there ain't no such thing as "instant" detonation.

The simple meaning of detonation is;

Detonation is a process of combustion in which a supersonic shock wave is produced.

Nowhere is it mentioned that a material is needed to instantly fully combust, as with high explosives and priming compounds, their rate of burn is governed by the rate the chemical reaction can occur, between the active agents of the material (ie oxidization releasing heat, in other words Burn/combust).

 

[Sport45]

If lord is using online Hodgdon recipes, they do not list primer info. However, if you email the recipe to yourself, the primer info will be there. The online load info is ok but it is no substitute for hard cover manuals.

You can also hit the print button and see the extra information in the preview screen.

 

[P51D]

Deacon8 - thanks for shedding some light on this. Interesting to hear from someone who actually works in the industry. Glad to hear you see no evidence of some crazy conspiracy wherein the administration is pressuring the manufacturers to stop selling to the public, which would essentially disarm us (I've seen such theories posted on THR and elsewhere). Like you, I see this as a supply and demand problem. Fear has created an irrational and VERY large demand. I still think things will settle down and get back to "normal". I just don't know when.

 

[Bart B.]

deacon8 comments:

In other words, if you hit a primer harder, it will not blow up MORE and/or faster.

Perhaps you can explain what caused my test of such issues some years ago to produce the results it did.

Took several Win. 70 firing pin springs that originally were Wolf 28-pound ones but had weakened to about 25 pounds (force at cocked, compressed length), cut them off in 1/2 inch increments, then took my rifle and ammo to a friends underground 100-yard range. Fired 10 shots with each spring.

Each successively shorter spring produced a lower average muzzle velocity spread. The shortest spring produced the largest spread as well as lowest muzzle velocity.

At 1000 yards, the results were similar with the same ammo. Groups got more vertical spread and needed more elevation on the sight to zero as weaker springs were used. Of course, good long range competitors have known this for about 100 years.

As most folks do their testing at 100 to 200 yards, seeing the difference between hard and soft smacked primers on paper is just about invisible. But a chronograph and long range testing will show it.

 

[Walkalong]

Some things can't be explained sometimes, they just are. This one definitely is, why is hard to figure.

Why does one powder shoot great, and a similar powder shoot poorly?

Why does one primer shoot better than another at long range?

Everything is happening in a split second, making it very hard to break it all down. Some are satisfied with knowing what results it gives, while others want to get it under a microscope and figure it out. We can study it until we go nuts, or just accept some things.

Like in math class. Why did I do it like that? I don't know, that's just the way your supposed to, that's all.