I have some data from the first edition Hornady manual, circa 1967. It's for the Hornady 270 gr. round nose bullet. Hornady included data for the bullet although they had already discontinued it. I do have 85 of those long gone bullets but have not loaded any.
I will assume the powders are the DuPont version if the IMR series with possibly the exception of 4895 as there was a Hodgden version using milsurp 4895.

Start: 3031 41.0 gr./1900 FPS Max: 48.8 gr./2300 FPS
4064 44.0 gr./1900 FPS 51.6 gr./2300 FPS
4895 43.8 gr./1900 FPS 52.0 gr./2300 FPS
4320 44.4 gr./1900 FPS 52.6 gr./2300 FPS
4350 51.4 gr./2000 FPS 56.6 gr./2200 FPS

Hope this helps some. I don't have any data using newer powders.
Paul B.

Our forefathers did not politely protest the British.They did not vote them out of office, nor did they impeach the king,march on the capitol or ask permission for their rights. ----------------They just shot them.
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