If one builds or buys a pistol primer pocket swaging die it will set the pocket depth to saami LP specs. The operation will also uniform the flash hole. I have fired 3 calibers for several years by this method and have no cratering. If there was a issue it would have shown up on the 2 piece Ballard breech block parting line. No pierced or blown primers in .40-70, .40-82 or .45-90 using Swiss.
kw

KaiserKong  I have no idea if anyone is making shims. We are talking very thin as in aluminum can? so possibly just a sharp punch of appropriate diameter, then dilled for flash hole. Seems to me, KFW has a solution.

Also interesting to note that in a 38-55 at a higher pressure,  show LR primers. As pressure rises, the use of pistol primers diminishes. I will still be conservative when reloading. In fact, I would call Hodgdon and talk to one of their ballisticians before using any load when in doubt. At what pressure level do you discontinue the use of pistol primers, and which one? Some primers are considerably hotter than others. When in doubt, find out.

That fact , that the 38-55 is a listed SAMMI cartridge, and the 32-40 is not, is very interesting to me. I was not aware of that, and would have to wonder what the reason was. I will have to do a little re- reading in the Marlin and Ballard books to see what information might be there since both are Ballard cartridges. I don't recall that discussion in either, but has been a very long time. Thanks for that information Dellet.

The 1992 SAAMI document does list the .32-40. Later one does not.
Chuck

marlinguy   I'm quite sure you would be vastly outnumbered if you called anyone who considered the 32-40 obsolete, or even was unaware of the cartridge an idiot. Some may not take it lightly. We are an obscure minority at best.

Gotta agree with you, Vall. Especially since a heckuva lot of repeaters were chambered for it also. Shouldn't be any skin off their nose to keep it on the books anyway even if it is "obsolete".

Next thing you know some idiot will pronounce the .44 Henry Flat obsolete too, and then where will we be?

KFW,
Interesting idea on the primer swagger. Have you used it to change large rifle primer pockets into large pistol pockets? Reading up on the website of a few of them they mention using it to ensure round holes and remove pocket crimps, but not about adjusting the pocket height. So is that an untold feature? 

Also for the records on using reliable sources for data - the load for my 8.15x46R cartridge is from Charlie Dell’s book where he calls out using the Rem 2 1/2 pistol primer.  Several of the other books by Waters or Kelver list the same primer in 32-40 or 33-47. I believe the primary reason not to use a pistol primer in a rifle cartridge is because most rifles have stronger springs that could pierce the pistol primer. From the photo here showing my Rem 2 1/2 spent primers (brass color) they do not get pierced by my light striking Aydt rifle pin. The Fed 210 rifle primers (steel color) struck in the same rifle are noticeably smaller indentation which is why I believe is leading to less repeatable ignition. The velocity variance using the rifle primer on my rifle is more than double than with the pistol primer.