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Does primer seating depth matter

Mine doesn't do that. It is very solid--no springiness at all when seating. I would double check to make sure it's assembled correctly before modifying the tool. There is a learning curve to using it.

The problem with using only feel is that it's very hard to tell the difference between a tight pocket and the primer bottoming out.
I took the indicator off and pulled the whole thing apart. Mine has a spring in the assembly that goes between the plunger and the stem that keeps it from being a direct connection. I don't have an assembly drawing of how it's supposed to be put together. All I know is that I'm compressing a spring instead of seating a primer.
 
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I am sure it matters how deep you seat primers, cause they put a bottom in the primer pocket. Why would you seat it anywhere else?
 
Just keep this in mind. All of the primer depth checking tools....are garbage because they datum off the casehead/rim. Even if you uniform your pockets...you cant seat primers based on the results of these guages. The datum must come from the bottom of the primer pocket.
 
The indicated K&M accounts for 4 things at once:
1. Primer height as the gauge is zero'd on this measure
2. Pocket depth, also part of zeroing
3. That pocket depth measure accounts for rim thickness as well
4. Seated depth w/resp to first 3

It does not rely on 'feel' for proper seating.
But it's sturdy hardware with which you can feel the seating, and you'll learn with this that feel doesn't even come close to consistent.
 
The indicated K&M accounts for 4 things at once:
1. Primer height as the gauge is zero'd on this measure
2. Pocket depth, also part of zeroing
3. That pocket depth measure accounts for rim thickness as well
4. Seated depth w/resp to first 3

It does not rely on 'feel' for proper seating.
But it's sturdy hardware with which you can feel the seating, and you'll learn with this that feel doesn't even come close to consistent.
No-one will believe anything that is posted so what is the point? It will go on for years. If you do a search there are 1000s of post on primers. I want to know what Tony Boyer does.
 
I think he may be correct but their is to much opinion on internet. He said he shoots competition. If I shoot groups like his for a varmint hunting rifle I would junk the rifle. The easy way is to just do it like the guys that set National Records and forget the details.
for competition reference:
 

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