Not a direct answer, but if you know the barrel twist rate you can start with the bullet weight. Otherwise, buy a few different brands and see what make gives you the best accuracy.
The "prohibition" re. steel cased ammo is from possible extraction problems that include the melting of the lacquer coating in the chamber as it heats up; the built up lacquer would need to be brushed away with solvent.
Some rifles shoot wolf ect.... very well, others just don't like it at all. Individual results may vary, but, the cheaper steel cased ammo is and can be fine to shoot at the range.