I use 3 Model 1903 Mannlicer Schoenauer 6.5x54 fullstock carbines and also a Swedish Mauser 94/14 carbine. Would like to venture into using cast bullets. Most likely 140-160 gr weight, but open to other weights.

Looking for:
1. a 6.5mm cast bullet commercial source
2. loads for both 6.5x54 and 6.5x55
thank you for your input

Bullets I can't help you with first of all because I cast all my own and secondly don't cast anything that small. I apologize as I should branch into the smaller calibers.

Your weight choices should be great. I lean toward the heavier bullets when shooting cast but that isn't gospel. Data, pick up Lyman's Cast Bullet Handbook. After almost 40 years of casting I still refer to it.

MAYBE, repeat maybe, Midsouth Shooters supply had a batch of 6.5 LEE aluminum molds for under $20 (plus shipping)... Cast a bullet in the 160 grain range. Original Swede bullet was 160 round nose. Original rifle had an 18 inch barrel. I suspect with modern lubes and powders you could dupe the performance with lead bullets... These were custom run molds and I would not delay. Had some LEE .224 molds too... 55 grain. Luck. Happy Trails.

As said, Lyman is the big source here. Took over Ideal Molds century ago. Sometimes faster smokeless powders work quite well with either cast or jacketed bullets. Cartridges of World usually has a couple loads for anything. Mr. Ackley did a two volume set of books with loads for almost all the cartridges of his day, thru 1990? Available from eabco.com, sometimes ebay (forget the nurse named Ackley), etc, Again, Luck.