Ed Harris
posted this
27 December 2007
The #308403 would not be my choice as the base band is way too large, example I had was .318” required sizing to .314 to fit into an unsized case, and still the base distorted and dragped a “fin” off the base corner as it entered the rifling. Nose portion was too small also.
I have used with good success a custom flatnose, 1.10” long, with 60 degree x.035 bevel base, three .080 driving bands .312 diameter, two .035 grooves, .012 deep, angled crimp groove .035 wide, .012 deep, cylindrical bore riding nose .303 diameter with 2 caliber tangent radius ogive and .187 diameter meplat.
Ask Veral to take those basic parameters and refine to his best practice, based on your twist and chamber cast of your barrel and throat.
73 de KE4SKY In Home Mix We Trust From the Home of Ed's Red in "Almost Heaven" West Virginia