This has to be the place for an answer to my dilemma.
Challenge: To develop a .38spl load running at a power factor (Bullet wight X vel.) of + 105 for IDPA.
Problem: Leading in the first 1/8th of an inch in the rifling. I also get lead splash on the outside of the forcing cone. Forcing cone is still 5 degrees. I intend to have it cut to 11 degrees.
Throats on the Ruger are all now .358
Accuracy using lead, jacketed & plated is excellent or as good as I can hold from a rest.
To date I have tried WC WW alloy and air cooled pure lead boolits with similar results.
Powder is 2.8 gr of Clays.
Bullet is 160 gr RCBS RN .
Take Care
Bob