I have 7x57 and 8x57 magazine rifles. No need for premium projectiles in those either. Conventional contruction projectiles work superbly in mine on all size animals.

For reloading, I believe normal dies will work, you just need a rimmed shell holder.

Don't forget RWS ammo if available in the USA. I have found it to be of superb quality and accuracy. Equal or better than my handloads. You pay $$$ for them though. Cheap if you can afford a double.