In the Marlin Microgroove .375 Winchester try the #375449 bullet cast of wheelweights or a mixture of 1 part linotype to three parts of soft plumber's lead. No gascheck is necessary.
Tumble the bullet all over in Lee Liquid Alox. Load the bullet unsized (if a dummy will chamber and extract freely in your rifle) and charge with either 11 grs. of PB shotshell powder or SR-7625, or 16 grs. of #2400 or 24 grs. of 4198.
Be sure to try a dummy round first. If the dummy doesn't chamber and extract freely, then size the cast bullet no more than necessary, probably .377-.378" is best.
This is not a heavy load, but approximates the velocity of the blackpowder .38-55 cartridge and is OK for deer hunting at short ranges within 50 yards and is an economical and fun plinker which won't blow small game or wild turkey to bits.
Tumble the bullet all over in Lee Liquid Alox. Load the bullet unsized (if a dummy will chamber and extract freely in your rifle) and charge with either 11 grs. of PB shotshell powder or SR-7625, or 16 grs. of #2400 or 24 grs. of 4198.
Be sure to try a dummy round first. If the dummy doesn't chamber and extract freely, then size the cast bullet no more than necessary, probably .377-.378" is best.
This is not a heavy load, but approximates the velocity of the blackpowder .38-55 cartridge and is OK for deer hunting at short ranges within 50 yards and is an economical and fun plinker which won't blow small game or wild turkey to bits.