I loaded up 10 7x57 20gr atop a wwlr primer sitting on top of that Was an RCBS 7mm-168-SP lubed with Jakes Purple. All I could get was aluminum gas checks the load was fairly accurate for a while but was getting leading at the muzzle. think I am going to back off 4 grains and try it again or shelve it until I can get a guiding metal check. Accuracy was amazing until leading became a problem.
Amazingly accurate powder for cast rifle cartridges, glad I bought 2 8lb kegs when I did if I recall about $120 per keg.
Winners go home, survivors go to the hospital and losers go to the morgue.
NRA Life Member
It's a good cast boolit powder, being on a par with IMR4759, but too darned expensive in my neck of the woods. It runs nearly 40% higher than most Hogdon or Alliant powders hereabouts.
I tried it some years back in 30-30, 30-40 and 30-06 and had generally good results, but nothing extraordinary. I have been hesitant to get too heavily dependant on it, because availability has been spotty. AA powders burst on the scene, were cheap, but then got rare, changed, and expensive. I tend to stick with IMR, Hogdon and Alliant powders these days, because they have been more consistently available and more consistent lot to lot. But 5744 shows up as a top choice for rifle cartridges very frequently in Lyman's #4 Cast Bullet Manual.
_________________________________________________It's not that I can't spell: it is that I can't type.
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 |