W748 curiosities

[halifax]

I have 3 kegs of Winchester 748. I use it in my 223REM & 308WIN handloads. Data exists for all bullets weights for the 308WIN. But I'm curious about the 308WIN variants (243WIN, 260REM, 7mm-08). I can't find any data for W748. The data seem to defer to W760. Is there a functional reason for this or did no company bother to work up the loads?

[JC Smith]

The Sierra manual has data for 748 in the .243 and the 7mm-08. The Hornady also has it for the 7mm-08 but not the .243.

[halifax]

The Sierra manual has data for 748 in the .243 and the 7mm-08. The Hornady also has it for the 7mm-08 but not the .243.

Thanks. I guess I missed those. Probably because 260REM is really what I was looking for.

ETA: Great suggestion on the Sierra book. Found a good starting point for 748 & 260Rem. Thanks