I've been using more Lilgun and 300mp with my 375 grainers. Have not done much medium speed powders.
Oh great, another thread that makes me spend money.
So am I wasting this powder on the SOCOM lol.
http://imgur.com/a/qqB5vDz
Here is a group with 28.0 grains of SR 4759, cci 350 priners. Average velocity is 1581 fps with a SD 4.8! Best load combo I have found for this Mountain Molds 459-375 boolit so far. 80 yards, and relatively shootable at that speed.
http://imgur.com/a/KzPddwQ
Last edited by pmer; 06-16-2019 at 05:31 PM.
Oh great, another thread that makes me spend money.
O.K., new here, but not new to casting. In order to properly gas check a bullet, the bullet itself has to be designed to take a gas check. As someone mentioned, the base of the bullet is of slightly smaller diameter then the main bullet body, enough so that a gas check will fit snugly. But, to crimp the gas check on the bullet, the bullet must be run through a lubri-sizer with the gas check pressed onto the bullet base. The lubrisizer is a device meant to size the diameter of the bullet to the proper diameter as well as making it more concentric, and also to crimp a gascheck onto it. Hope this helps.
I am new to the .458 SOCOM, picked up an AR in that caliber, and was thinking about using a gas checked bullet, considering that a plain based bullet might eventually deposit enough lead in the gas port to affect the functioning of the gun. Also learned that poly coated bullets like the Hi-Tec will eliminate that problem.
Glad to finally be on the forum.
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 |