Load data from two of my manuals
257, I recommend that you invest a couple dollars in the Speer and Hornady reloading manuals. They are a worthy investment if you're going to get into metallic cartridge reloading. The reason I like manuals made by bullet manufacturers rather than powder manufacturers is because they will normally give loads for multiple types of powder (but typically only their own brand of bullets).
You can mix brands of components (you can not mix one powder type into another powder type to create a powder coctail). As with all reloading, start with the low recommendation and work up your load from there. Your quality reloading manual will explain this process, and what warning signs to watch for as you approach maximum loads.
Here's what my manuals say:
Speer Reloading Manual #11 (1987)
243 Winchester:
80gr spitzer (you can substitute FMJ, but I recommend working up your load).
IMR 4350 - 41.5gr = 3008fps
IMR 4350 - 43.5gr = 3151fps
IMR 4350 - 45.5gr = 3288fps (max load)
100gr boat tail (substitute spitzer)
IMR 4350 - 32gr = 2485fps
IMR 4350 - 34gr = 2614fps
IMR 4350 - 36gr = 2750fps (max load)
Hornady 4th Edition (1991):
243 Winchester:
80gr FMJ - This manual doesn't have load data for IMR 4350 in this bullet weight. Possibly newer manuals do.
100gr spire point
IMR 4350 - 39gr = 2700fps
IMR 4350 - 40.1gr = 2800fps
IMR 4350 - 41.4gr = 2900fps (max load) **NOTE: notice how the Hornady loads are higher than the Speer loads. This is why you want to have more than one manual so that you can compare between them. As always, work up your loads and approach maximums with caution, watching for pressure signs.**
-------------
30-06 Springfield
Speer #11 Manual
165gr Boat tail
IMR 4350 - 54gr = 2658fps
IMR 4350 - 56gr = 2770fps
IMR 4350 - 58gr = 2865fps (max load)
Hornady 4th Edition Manual
165gr Boat tail spire point
IMR 4350 - 51.4gr = 2600fps
IMR 4350 - 53.4gr = 2700fps
IMR 4350 - 55.4gr = 2800fps
IMR 4350 - 57.4gr = 2900fps (max load)