If you cast a slug without lube groove and then pc it, would you be able to shoot it like a jacketed bullet?
Would you have to cast it soft, or could you cast them at 12 bhn?
BD
If you cast a slug without lube groove and then pc it, would you be able to shoot it like a jacketed bullet?
Would you have to cast it soft, or could you cast them at 12 bhn?
BD
It's still a lead boolit. Use lead data.
But the PC does act as a sort of jacket.
NRA Benefactor.
Agree. Use the data. I cast grooved and NLG boolits at 9-12 hardness and treat them all the same with PC.
With a properly PC'd boolit, you can go several BHN less than you would with a lubed/alox'd boolit
I PC or Hi-Tech coat and both ways I like my bullets to be at least BHN of 13. It's my experience that I get less leading and see to be very consistent in weight. Super soft bullets never really work well for me.
I've used low jacketed charge with MP 125 gr no lube groove, PC-ed with Smoke's powder in 357 Sig (only did 4 charge ladder). They went higher FPS than in the manual (well into 1400 area); one of the charges gave me 8 SD. Primer shoulders were looking nice and round, I know it's not real indicator of pressure in a semi-auto but that's only instruments available to me - primer inspection, chrono and perceived recoil. Barrel was clean as a whistle.
EDIT: forgot to add alloy was "hardball" from Rotometal, air cooled both after casting and after PC. Didn't check actual hardness (no tester).
BP | Bronze Point | IMR | Improved Military Rifle | PTD | Pointed |
BR | Bench Rest | M | Magnum | RN | Round Nose |
BT | Boat Tail | PL | Power-Lokt | SP | Soft Point |
C | Compressed Charge | PR | Primer | SPCL | Soft Point "Core-Lokt" |
HP | Hollow Point | PSPCL | Pointed Soft Point "Core Lokt" | C.O.L. | Cartridge Overall Length |
PSP | Pointed Soft Point | Spz | Spitzer Point | SBT | Spitzer Boat Tail |
LRN | Lead Round Nose | LWC | Lead Wad Cutter | LSWC | Lead Semi Wad Cutter |
GC | Gas Check |