I love these conversations. One thing that my father taught me that I try to use as much as I can is this. "If you don't have the brains, borrow them."

What i loved about this video is that I found Erik and Greg from two different directions, then i find this video of the two of them together. The information you guys are giving out for free is amazing. Thank you so much for everything you both have done for this sport and this lifestyle.

Can’t get enough of you too, everything you to say makes so much sense, and again it does start with primer pockets always has and always will. I’m 63 years old and I’ve been focused on primer pockets for over 40 years. Thanks for all the help thanks for all the advice, keep it up thank you 🇺🇸

Townsend Whelen first talked about the importance of primer pellet crush to consistent accuracy many years ago. Ken Markel built a tool to set primer pellet crush based of the depth of pocket and height of primer and setting crush precisely. Interesting to see this discussed, Its as if new generations have to relearn what was discovered in our past. Looks like a nice tool certainly would help load a larger quantity of brass.

I was aware of the ignition system timing on the gun, because of people discussing lock time on Schuetzen rifles. People talked about the difference between an external hammer and internal striker such as  a Win 1885 and a Ruger #1, and how much difference it can make to offhand shooting. It's good to hear it put together with the primer seating regimen to create the overall picture of that system. And the lube part, all you have to do is shoot an autoloader in increasingly colder temps over a day to understand that one in a hurry. That even cost me a rabbit one day about 35 yrs ago, frozen bolt due to the lube. The part on the depth measuring of the pockets and the seater tool anomaly needed to be pointed out as a start point, not something I ever worried about, but, makes a lot of sense. Rimmed cartridges are notorious on rim thickness issues from lot to lot, that was the first thing that I related to when you were talking about rims, I have 218 Bee brass that is ok in the Forster press and universal jaws, and some that isn't, because of that variance. Fun show today.

I have been watching you guys since I fell down this rabbit hole.
So much great info. Always an eye opener when i dial up one of you guys.
Thanks for sharing your knowledg. Its priceless.

Thank you Erik and Greg for having these discussions and sharing this info with all of us.  I could listen to you guys talk about this stuff for hours!

I want an hour conversation on blueprinting bolts now!

This is a gold mine. I love this information thank you Erik!
Also anyone that is thinking about Patreon.... Do it. I keep finding more and more videos and I keep learning more and more.

Wow - what an eye opener - thank you so much Mr. EC for doing those chats/interviews/conversations  :)

Whats crazy is the BR shooters will do the primer depth test first and then after that, fine tune the spring using spacers. I have a CPS and have spoken to Greg when calling for customer support - but this has been the best explanation I have heard to date on this topic. Keep these coming!!

Keep them coming ! This info is once again priceless . This clears up primer seating for me . It’s always been a unknown . Many people have a specific depth ? But if u measure even crudely , I knew this could be just one measurement fits all ? Love the technical interviews ! This is what keeps me coming back .

Eric, I watch many videos of experienced competitors and reloaders to gain any fraction of knowledge that I can derive.  I shoot mostly the large 50 BMG caliber, and have been measuring primer pockets before and after firing, measuring primers (several manufacturers), and the anvil prongs.  Each separate lot of my brass is identifiable from the others, and I do uniform the pockets, even the match brass.  My custom commercial primer seater uses the head of the cartridge as the datum and will easily and reliably seat primers to less than .001" accuracy.  As your video shows, it is important for accuracy to have the "Mechanics of Ignition" as constant as possible.  Consistently arming the primer is controllable,  the hardness of the primer cup, and the priming compound are variables that we cannot control.  I do log everything in a spreadsheet, and every shot on target is logged as well.  If we only derive 1% benefit from a particular process but we do 10 of these we see a 10% improvement:)  You control how much your willing to do for accuracy.  Keep up the good work, and thanks for your contribution to our sport.

One of the best most informative videos I've ever seen!  Thanks to both of you!

The simplest and best way I know to check primer pocket depth from the rim is to insert the case in the case holder you are using in the primer seater and measure through the hole with a small depth gauge to the bottom of the primer pocket from the bottom of the shell holder. This way you are measuring the same method as the primer press seats the primer. Obviously you are depending on the precision of the case holder itself but you are doing the same with the primer seater anyway.

Great stuff! These types of interviews are great. Thank you both for your time.

RCBS Benchtop Primer with Holland Shooters upgrade seems to be a good alternative to CPS system. Holland system also comes with a Primer depth indicator.

FYI Erik
The primer pocket and the case head markings are performed as a “heading” operation. It’s cold formed.
The case rim is a second op performed on a lathe with a form tool.
The uniformity tolerance is due to how the lathe holds the brass and what it is referencing off of.
If the stamped the brass after the rim was formed the brass would be scrap in our world

Another excellent interview Erik, this follows on to what Mr Borden said about the importance of ignition on consistency.

Funny, my grandfather used almost strictly small grain rice for polishing. Media was expensive, he attempted a few, I remember walnut. He was never satisfied, always reverted to the rice. I recall just how buttery those rounds fed.