good afternoon;
• .375H&H -> .375 Weatherby game plan request review.
• Shooting nothing but cast bullets.
• Game plan to fire form 375H&H brass, new and once fired, to 375 Weatherby.
• Mix of new and once fired .375H&H cases.
• Will anneal all cases before loading, trim all cases then start fire forming .375H&H cases.
• Trim all cases to 2.835” (based on shortest case in lot)
• Cast bullets are Lyman 375449 gas check cast bullet\Lee 375250
• Sized to .378", barrel 377” (slugged barrel)
• 15 grains of Red Dot powder.
• With .375 Weatherby case, OAL of loaded round is 3.235. length needed to close bolt.
Using Weatherby 375H&H brass, Lyman 375449 gas check cast bullet with 33 grains of IMR4198, used small tiff of Dacron before seating bullet, 50 yards group size .348”, shooting bench and sand bags. Speed unknown, 26.5” barrel unknown manufacture. Rifle weights 10+ lbs.
Thx for any input.
rp