What's a better bullet seater and why

jfarrell

jfarrell

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Looking at buying one of these, but have not seen either in action. What is better K & M arbour press with force measurement with dial indicator or 21 Century hydro bullet seater
 
I'd just like someone to explain the jyst of them to me!!

Is it if the pressure goes up too high, are you supposed to abort and turn that case??

-J.
 
Someone with more experience will hopefully chime in. I thought that if the pressure increased it was due to greater neck tension, requiring annealing or other to rectify it.
 
jfarrell said:
Looking at buying one of these, but have not seen either in action. What is better K & M arbour press with force measurement with dial indicator or 21 Century hydro bullet seater
Click to expand...

Having concerns about your bullet seating?

I have sold a few K&M dial indicator arbor press... no complaints. A dry system

Not sure if I want water near my ammo???

http://forum.accurateshooter.com/index.php?topic=3830355.0

This thread goes into depth about the pros and cons. Personally, by the time I get to use this press, the work is already done. It is only an indicator of a problem, like a runout gauge.... too late.

Proper case prep is paramount if we want to have consistent seating.... I don't use my runout gauge much anymore.

BUT it is a way to measure the affect of various parameters.... I have done this and found areas that I want to focus my energies on and areas where I couldn't see an affect so ignore.

I think it can be a helpful tool if taken within the limitations of the info it is providing... Like a shooting over a chronograph and stewing over the numbers generated instead of looking at the target and seeing the end result.

If you want to try a K&M, let me know.....

Jerry
 
Gunneegoogoo said:
I'd just like someone to explain the jyst of them to me!!

Is it if the pressure goes up too high, are you supposed to abort and turn that case??

-J.
Click to expand...

The entire point of precision reloading is to have consistent and repeatable ammo that shoots with the smallest cone of accuracy as far as the target is.

In this quest, we know that the case neck is very important. Here we will do all the voodoo including annealing, outside neck turning, varying neck sizing, with the eye on making each bang identical to the next. This we measure with a quality chronograph with an output saying our ammo shoots with very little velocity variation.

The idea is that if the ES and SD are indicated to be low, bullets will fly in a similar path to a target way out there. Yes, this is an IDEA.....

If it takes various amounts of force to seat a bullet into a neck, this should indicate a variation in neck tension AND that variation can lead to all manner of unhappiness when the primer ignites. SHOULD....

A good theory and to a point, I concur BUT with varying combinations, comes varying affects to these conditions and only proper testing will show you what you and your system needs to reach its fullest potential. And when that system changes due to other variations in the system.

Many problems are NOT ammo related but since we can see and measure this, we muck with it.

Seating force IS important ... to a degree, as is neck tension but so is charge weight, primer choice, case alloy, neck consistency and on and on it goes. Some stuff we can't adjust so either we accept or change.. Others we can tweak to our hearts delight and ponder on all its many end results.

You need to test and figure out what is important to you and figure out what is needed on the prep side to give you the desired result on the target side.

But don't forget about YOU the shooter and of course, them evil winds.

Jerry
 
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