First, if you have a properly head-stamped piece of the fired or un-fired brass, check to be certain what type of 6.5 you actually have. Even then, it might be good to have the bore 'slugged' to be certain of the dimensions and of exactly what cartridge the old girl is made for.
If it truly is the 6.5 Swede, you have one fine old cartridge/rifle combination. The '94 is a fairly strong action but isn't designed to take the more modern pressures of a lot of cartridges.
If you are looking for reloading information there are several places online that have some good information - Alliant, Hodgden, Nosler are just three. Most, if not all, will have loads for 100 gr bullets.
If you're looking for loaded, factory ammo, you'll have to search for it from the likes of Midway USA, Graf's and others. I picked up some Lapua factory stuff for my Swede in 123 gr loads and I believe they make some 100 gr stuff as well. I got mine from Graf's.
The older Mauser's and other older firearms cause the manufacturer's to load ammo for the Swede at somewhere below 50,000PSI. In a modern gun, this can be pushed up to 55-60,000
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