Thanks for the replies. I figured as much as the bullet diameter in the Swiss 7.5mm is .315 and the Swedish 7.5mm is.325, or so I have read online. I see you are saying Swiss and Swedish ammo are interchangeable, but I'm wondering about shooting a .325 bullet in a bore designed for .315. Is my info wrong, or can you educate me further, as I cannot translate the documents you posted? Thanks.
Above, what he's talking about is using full length .32-20 Winchester case with the bullet seated deep into the case, very nearly like the Russian 7.62x38R Nagant, in order to compensate for the lack of a cylinder throat.I use full length 32-20 brass in mine + a 313-115gr Ranchdog boolit.
The thing that makes the Nagant revolver special is that there is no shoulder/throat in the cylinder. It is bored clean through.
To compensate for that a boolit that fits the cylinder is used in combination with a big forcing cone in the barrel to squeeze the boolit from .325 to .308.
In the full length 32-20 brass i overcame the chamber "wobble" driving the boolit directly into the forcing cone.
I load 15 grains of SW#1 a card wad and then the boolit. To hold the boolit in place i run the front of the case into a .30M1 die.
Today, in the U.S., this cartridge is not being loaded with .325" bullets. Original Swedish military bullets were a heeled type with a .325" major diameter. In the U.S. there is no source for a heeled bullet with a .314" heel and .325" diameter. There are no bullet molds made for this cartridge and there are no commercial bullets that mimic the original Swedish 7.5mm cartridge. And since this discussion is about shooting the m/1887 today it is really a moot point what the original bullet was. We have to deal with what is available now and we need to understand why there is a difference [of opinion] on this matter. You will be shooting .312" to 314" diameter bullets originally designed for the .32 S&W and .32-20 Winchester.Size of the bullet: yes, as xxxxxx wrote, some sources told us .325 is the size of cast Swedish bullet, barrel is about .308. Its brother, 7.5mm Swiss ordnance cartridge, is about .315 and the barrel of M1882 Swiss revolver is .295/.315.
In case you make cartridge with cast bullet about .315", you can use it in both ones.
In case you want to make a copy of original SWE cartridge, try to find some .325 moulds. But in practise anything between .308 to .325 for the SWE one.
My way is with the .313 bullet from LEE .314 SWC 90g. moulds + from 3.8g. to 4.8g. of CC No.5. Cut 32-20 brass are OK.
The legacy of heeled bullets is the cause of confusion among many shooting enthusiasts over the actual physical diameters of the bullets they fire in their guns.
So the correct answer could be: yes, original military bullets were .315 for SWISS and .325 for SWED, but you can shoot "suitable" cast lead bullet from both. "Suitable" = about .310-.315. SWISS barrel is .315 and SWED .308 in grooves.Thanks for the replies. I figured as much as the bullet diameter in the Swiss 7.5mm is .315 and the Swedish 7.5mm is.325, or so I have read online. I see you are saying Swiss and Swedish ammo are interchangeable, but I'm wondering about shooting a .325 bullet in a bore designed for .315. Is my info wrong, or can you educate me further, as I cannot translate the documents you posted? Thanks.
The original Swedish bullets were not cast. They were swedged soft lead.In case original Swedish revolver M1887 was constructed for cast .325 (heel) bullets,