I have a well worn Speer Manual #7 from the late 60's that shows a good number of loads. Best powders IMR4895, 4320, 4064 and 3031.
Hornaday Vol. II, pub. 1973. Easy to pick the best powder for 250 and 200 grain bullets as IMR4320.
Nosler Number Three, IMR4320 shows up as the best powder with the 225 grain bullet.
Lyman addition #44 shows IMR4895 as the best powder.
I have found that the local librarys sometimes have a reloading manual from the past.
Siskiyou