I have used two methods. One is to use a fireformed and resized case (I like to use a larger bushing so as to lower the neck tension), seat a bullet long, chamber it and extract it, hoping the bullet is still in the casing and isn't stuck in the lands. The easier way is the hornady gauge with the threaded case.

I take all my measurements with calipers with the hornady or sinclair coal gauge. The kine that measures from the ogive.

The biggest problem with  seating long is, you better not change your mind, because once you chamber a round that bullet will likely need to be tapped out of the barrel with a cleaning rod if for some reason you don't shoot it.

Cool.  I like that the Hornady gauge/tool uses the actual boolit you're gonna use. 

Noted on the seating long.  I don't intend on doing that (seating beyond jam point).  That said, heard about the issue you noted. 

As mentioned before>>>>
Save some time figuring it out
https://2ahawaii.com/index.php?topic=38874.msg350067#msg350067

As mentioned before>>>>
Save some time figuring it out
https://2ahawaii.com/index.php?topic=38874.msg350067#msg350067

Thanks for the effort in posting. But, 1) the text doesn’t align well, 2) asking folks to share their experiences and 3) part of the fun in this is trying on my own and seeing the results.

Ordered the Forster micrometer seater die.  Once I settle on a powder charge, I plan on varying seating depths.  Likely starting with max length based on magazine and back toward "standard" COAL.

For magazines, I have a couple of Magpul and one Accurate AICS mags.  So far, the Accurate seems the best, but also quite a bit more expensive.  The Magpuls work on, but seems like something is up with the follower. 

Once you have the powder charge that nets the best ES/SD you can vary the seating depth to allow the bullet to exit the barrel at the optimum barrel time.  (time were the barrel end is at an optimum point in it's vibration)


If you play with the Optimal Charge Weight method of load development you will be able to see a figure eight pattern in the groupings where the barrel whips in that pattern.  Usually the top most crest of the figure eight is a good point to start playing with seating depth. Coincidently, this also, many times, coincides with a great ES/SD load.


It is a very similar, if not the same, concept as barrel tuners.  With the tuner, you tune the barrel to allow the exit of the bullet at the optimum point.  With seat depth, you tune the load to exit at the optimum point of barrel harmonics.   

Erik Cortina has a great explanation.

He is champion F-Class shooter and have exchanged with him many times on accurateshooter.com over many years.

His easy, no nonsense, and logical approach to precision reloading is something everyone should look at and take into consideration.

Once you have the powder charge that nets the best ES/SD you can vary the seating depth to allow the bullet to exit the barrel at the optimum barrel time.  (time were the barrel end is at an optimum point in it's vibration)


If you play with the Optimal Charge Weight method of load development you will be able to see a figure eight pattern in the groupings where the barrel whips in that pattern.  Usually the top most crest of the figure eight is a good point to start playing with seating depth. Coincidently, this also, many times, coincides with a great ES/SD load.


It is a very similar, if not the same, concept as barrel tuners.  With the tuner, you tune the barrel to allow the exit of the bullet at the optimum point.  With seat depth, you tune the load to exit at the optimum point of barrel harmonics.

Yeah. Going to “reset” once I have a batch of once fired brass. Have about 50 and goal is to have 100. Have a chrono, so all set.

Erik Cortina has a great explanation.

He is champion F-Class shooter and have exchanged with him many times on accurateshooter.com over many years.

His easy, no nonsense, and logical approach to precision reloading is something everyone should look at and take into consideration.

I’ve been watching his videos on YT and also on Patreon. I also like and appreciate his approach to loading.  A good blend of discipline in what’s important and a practical “don’t worry about that” to stuff that people can seem to over analyze.

Yeah. Going to “reset” once I have a batch of once fired brass. Have about 50 and goal is to have 100. Have a chrono, so all set.
I’ve been watching his videos on YT and also on Patreon. I also like and appreciate his approach to loading.  A good blend of discipline in what’s important and a practical “don’t worry about that” to stuff that people can seem to over analyze.

too bad you don't have "a friend" with a cool chrono...

too bad you don't have "a friend" with a cool chrono...

I have no fwens. . . 

I have no fwens. . . 

There is a good reason for that! 

There is a good reason for that! 

[insert Danny DeVito gif]

 

 

I have no fwens. . . 

you kill all of them in traffic accidents?
 

you kill all of them in traffic accidents?