RUAG RWS 4521 Berdan Primers

Hi there guys. I was recently into one of my local gun shops and came out with this carton of RUAG primers and as you can see these are the number 4521 primer and these are a Berdan primer and from what I understand these are intended for reloading 9mm pistol type ammunition and normally you wouldn't bother loading 9mm ammo that was Berdan primed but I've got a bit of a special situation that I hope this stuff will be for and we'll show you that later on. Anyway, these are RUAG branded and you can see it's aerospace defense technology part of RUAG and these are actually made by RWS in Germany. So as you can see here these are a 4.5mm primer. It's got the lot number on it and all that stuff. These are not an especially cheap primer. There's what I paid for them $26 for $250 although considering some of the current and recent primer shortage prices maybe that's not such a terrible price after all. So a very plain little cardboard package. Let's open them up and have a look at them and see what we got inside. So they should just be laid out, primer cup up if they're like the rifle primers that I bought recently. Oh there everyone face up except for one rebel there that's going the wrong direction so we'll pull him out and let's measure this thing and see what it comes to if it's actually 4.5mm or if it's slightly different. One handy thing about these metric convertible digital calipers you can set them to inch or millimeter size and look there we go right on the money 4.5mm as advertised. So they are as advertised let's have a look at what I'm going to use them in or what I'm going to try to use them in. This is Spanish made 9mm Largo brass so I have a reasonable quantity of surplus 9mm Largo ammo but not obviously not an infinite supply of it so I'd like to be able to reuse some of this brass and I have been able to successfully de-prime some of it not all of it some of it the primers just didn't want to come out easily but anyway this stuff is a reasonably decent looking brass it's of course once fired and Berdan primed. So I had thought about altering these primer pockets to get them to take a a boxer primer but if the Berdan primers are available it certainly makes sense to try to use the proper original primers. Now the primer pockets on these are a little bit narrower across I'll measure that and show you so there's what they come out to be 4.43mm as opposed to 4.50mm but hopefully 4.44mm there hopefully that will provide a good tight interference fit on the replacement primers. So I'm going to go grab a priming tool and we're going to see if we can use these primers in this brass so wish me luck. All right I'm back with the Lee Auto Prime and I've got a shell holder in there tried a couple of different ones the number 19 was the recommended one for 9mm Luger and 38 Super but seemed kind of like a loose fit so we're going to go with the number 6 instead because it seems to be a little bit better fit. Anyway rather than filling the tray up here with primers we're just going to put a single primer in the tool there and I may go to using the primer feed on this thing if everything works out so let's see if we can prime a case with this primer don't hit the camera. Fairly firm going in there but yeah that's that's seating reasonably good yeah that goes in pretty decent a little deeper yeah that's not bad and that's probably not as deep a seated primer as I would like it's basically flush right there I'd like to get it a little bit below flush but this is only going to be fired in a bolt-action spanish destroyer so don't have to be too critical about the primer seating depth yeah that'll do the trick all right now that those seem to fit in those cases pretty good we've got a bunch more to prime here so I'll do that and then next thing we'll look around for some load data and load some rounds up and head out to the range and see how these work