We barely scratched the surface.  Watch full interview here:  https://youtu.be/IUI_pXWUMD0

Of course it’s important, the dude is trying to sell you a patented gizmo you can’t get anywhere else!

Sounds like a solution in search of a problem

Man I remember when Eric said " Reloading is simple, you make it dificult" wow so much to learn!

The coolest part of reloading is the rabbit holes...especially when you find one that delivers discernible results.  The shit talk for even bothering is fun too lol!

I can only hope that I can one day shoot well enough to nit pic my primer seating depth.
I'm nerding out on this stuff!

I believe some of the old BR theories on priming may still hold true. The problem will always be with the primers tolerances themselves, and we can not control primer manufacturing. We can now uniform cases and primer pockets very consistently, and could develop tools to uniform and measure pockets to case base or rim top. However, when I (and others) have measured primers there is significant inconsistencies. For example, I have measured CCI BR4 and Federal Match LR primers. Both cup height and height from cup base to top of anvil measurements can vary by several thousands of an inch. In addition, there are variances in the priming compound pellets. This why I feel that seating by feel may currently be the only way to get reasonably consistent crush. It takes practice, and slight variances in primer to cup tightness sometimes makes this tough, but you can often feel first contact. The problem is there is no way to confirm or measure this except with the substitute measurements of velocity and accuracy, which are affected by many more variables. I use Sinclair and 21st century hand tools with great feel. It also appears that the Primal Rights CPS is built very well and should allow great feel, although I haven’t tried it yet. I am no expert, and am not in the same league as either of you, but it does not seem possible to have consistent crush with a set/controlled seating depth due to primer height inconsistencies. Just to be complete, I am aware that K&M does make a hand primer seater with a gauge (https://kmshooting.com/product/primer-gauge) that measures the depth of each primer pocket and each individual primer height during each primer seating operation to allow “precise control” of depth. However, this seems like it would be a very slow and arduous process, so I have not tried it. These are the rabbit holes that make the sport interesting and cause headaches. What does matter and what doesn’t…the world may never know. However, Eric does a great job testing and discussing options to inform his readers what seems to truly affect results and what just makes us feel better. Thanks to both of you. Best wishes.

I would love to see you do a test - 20 cases same lot prepped identically accept primer pockets..half uniformed and see what they group at as well as chrono..this is interesting

The info in this video doesn't scare me away it draws me in closer

This whole video was a sales pitch. I prefer Eric talking.

If you are seeking to make the reloading experience more enjoyable, then by all means, spend the money if you’ve got it.  If you are seeking to make a difference in the precision of what happens at the target, then your time and money are probably better spent elsewhere: training, range time, etc.

Before Lapua made .22-250 brass Winchester was it. In order to seat most primers you had to uniform the pockets. .17 Rem brass and some large pistol revolver brass same thing. Grab a Sinclair uniformed and go to town. Great videos I've learned a lot from you. I don't shoot competition but I'm a serious shooter.

So much information!  Easy to get lost!  I noticed an improvement when I stopped using the hand primers and began using the press to load primers.  Same press and same shell holder, ever time.

Important to remember these guys are chasing myth like results, with ridiculously expensive 25 lb rigs, at incredible distances!   If you're just a weekend warrior (like me) and chasing 1000 yards, or even a mile, just go shoot!

The best thing I ever did is clear my bench from all the unnecessary tools.  My results compounded fast when I stopped chasing the internet shooters. I was stuck at 300 yards thinking I needed to trim, turn, unify.  Then you get into concentricity gauges, and comparators.  Nope! Just wipe the lube off and go hit targets!   Find a load at 100 the gun likes, then go right to 1000. Then teach all your buddies.  There is no need for any other BS unless you need better than sub 3/4-1 MOA groups at 1000 or a mile.  Learning the wind is way more important, seeing your misses is way more important, your spotter is more important. Stop loading and start shooting!  Then, circle back and become an F-class LOADER.

The only time I uniform a primer pocket is if I had to remove a crimp and if I'm removing a crimp on brass it's 556 brass that's being shot out of an AR15. Ever since I've watched a few of these videos while doing brass prep I've got on the bandwagon of doing absolutely nothing with primer pockets or flash holes. Hell most of my 6.5 Creedmoor/Grendel and 6mm ARC I barely clean the brass and I don't see any differences between that ammo and my old ammo when I was doing everything under the sun with it. I'm not exactly sure if anything in this video applies to anything I do but it's definitely interesting to me because I've never really thought of any of this before. Really cool info and great video as always keepem coming brother!!!

I have to uniform the primer pockets on ALL of my LC brass (5.56) because if I don't, the primer will not sit flush with the base, it will stick out.

Will a change in primer seating depth take a .3 gun into the .1’s or .0’s? No, more focus should be applied to consistent case prep.
Consistent neck tension and bullet release plays much more of a factor. I like Greg and agree with 80% of what he says, at the end of the day he has a $650 priming tool to sell.

Props to Greg for cultivating that badass Boone & Crockett worthy neck beard. I’m trying to decide whether a #4 double coil long spring or a Conibear would be better to trap that bad boy with. Either way it’s going straight to the taxidermist once I catch it.

I may not be qualified to comment here but as a manufacturing engineer i know a little bit about datums. What I don’t know is how important the nit picking is here. I understand Erik’s point about a primer pocket uniformers locating off the base of the cartridge, and I also understand that when seating primers the top of the cartridge rim will become the datum but now we will begin to get into what I see as the problem. My experience is that the pressure needed to seat primers varies greatly so I really don’t know what kind of consistency I achieve in seating depth anyway. I would suppose that I would want the bottom of the primer pocket to be my datum for seating primers which would be best achieved by having uniform primer pocket depth and diameter, if I am controlling seating depth based on seating force (ignoring variation in primer dimension and their effect on seating force). Of course none of this addresses variations in distance of the primer to the actual powder charge but I will also assume this is the most inconsequential factor and that actual flash hole diameter consistency would be much more important. In the end what I am guessing is that uniformly seating the primers into into and in relation with the bottom of the primer pocked is what you should be chasing which may best be achieved with uniform primer pockets.

I usually shy away from videos like this.  For good reason.

Very interesting topic, Eric, gonna have to watch all of it now.