..............I've got a M38 Carcano FC (Fucile Corto) in 7.35 x 51, I've had for quite a few years:
I think I'll probably be selling it here in the next couple of months too
The sights are set up to hit a human target out to 350 yards if used with the top of the front blade even with the top of the 'V' in the rear sight. You have to bury the blade to hit at closer ranges. Easiest fix is to put some Steel Bed or other putty type epoxy on the front blade. When hard you form it with a file, then take it to the range and file the epoxy down to put you where you want to be.
I have the Lyman mould for it, the .301136, but have had better luck with sized down 30 cal boolits. Possible reason is thatthe GC shank on the Lyman slug is too small to securely hold the 30 cal GC. My Carcano's barrel slugs .292" x .301" and a problem could be in stuffing a 30 cal cast slug with a .300" nose. You can use the Lee C309-120-R and not worry about it. I eventually made myself a nose sizer to reduce the nose OD. To use 30 cal cast you WILL need to acquire a push through type sizer. THat way you lube-size to .308" and then run the lubed slug up through the .301" die.
BTW, a good load for that 120gr slug is 8.0 grs of Red Dot. Depending upon what your lead cost you, even with the primer and GC it's as cheap as today's 22RF
Another good slug is the Lee C309-150-F. Again, 8.0/Red Dot = 1282 fps. 25.0 IMR4227 = 2236 fps and 17.0 H2400 = 1830, 12.0 SR7625 = 1551 fps, 23.0 H4198 = 2020 fps.
Then the Lee C309-160-R:
Surp IMR 4198, 23 gr =1530 fps
SR4759, 30.0 = 1924fps
IMR4227, 25.0 = 2190 fps
Unique, 12.0 = 1615 fps
H-4198, 23.0 = 2009 fps
2400, 17.0 = 1825 fps
Surp 4895, 32.0 = 2064 fps
IMR 3031, 33.0 = 2286 fps
Lyman 311291, 173gr RNGC:
IMR 4227, 20.0 = 1810 fps
Surp 4895, 30.0 = 1975 fps
IMR 4064, 30.0 = 2157 fps
Surp WC 852 (slow) = 1650 fps
Hornady 123gr SPFB:
Surp 4895, 35.7 = 2043 fps
IMR3031, 33.0 = 2361 fps
Surp WC852 (slow) 47.0 = 2367 fps
Surp WC846, = 2303 fps
IMR 4320, 35.0 = 2226 fps
...................Buckshot