.243wcf: 95-100gr bullets: 42.5gr RL22 (start at 39.0 and work up, this is max but was most accurate in MY rifle; ditto for Nosler in manual #4), Winchester cases, Fed#210 primer.
Velocity will equal or exceed 3,000fps.
.357mag: 158-160gr bullets (for deer I recommend 158gr Rem. JSP or Hornady XTP-JSP; 17.8-18.0gr of Hod. Lil'Gun. (no need to work up, only produces ~30,000psi) But, no need to exceed either as you'll likely see a decrease in velocity due to characteristic of powder. (Do read Hodgdon's recommendations on this powder, ect.) Match brass headstamps, and use Winchester or CCI magnum primers. (Federals are superior match primers, but are a tad thin for highperformace reloads.... IMO.) Velocity is 1,500fps in 4" or longer barrels. 2,100fps from a 20" bbl.