for example my Lyman doesnt have any data for 230 gr RN lead .45 acp whereas the Hornady does.
Yes, it does.
Look on page 382, Lyman mold #452374, 225 gr. LRN (#2 alloy)
That is the "as cast" weight before the grease groove is filled with lube.
After you size & lube it, it will be awfully close to 230 grains depending on your alloy mix.
And +/- 5 grains is not a deal breaker with cast bullet load data.
Very seldom if ever do they cast the exact weight shown in the manual.
That is true of every cast bullet shown in any manual.
Plus if you:
Change to a softer alloy then Lyman #2 and it will weigh 235 or more.
Change to a harder alloy then Lyman #2 and it will weigh 225 or less.
SO, it is indeed 230 grain LRN data.
I would like to best ones out there for rifle reloading.
Pick a brand of bullet you intend to use most and get the manual published by that bullet manufacture.
Hornady, Speer, Sierra, Barnes, etc. all offer brand specific reloading manuals for their bullets.
Of them all, the Lyman #49 is the only one covering a broad selection of bullet brands and weights in one book.
All other manuals are bullet brand specific.
Also, the Lee manual covers a lot of loads, but it is all just reprints of load data from the bullet & powder manufactures labs. Lee has no testing facility of thier own.
rc