Reloading .303 British : O.A.L. Query

The issue I was initially having was not realizing I was trying to get the same numbers using two different types of bullets. That being the Tangent and Secant ogives. The Tangent ogives in my 7.62mm No4Mk1* when set to an averaged OAL of 2.830" imitate the military M852 Match Round pretty much dead on. Using Hornady 150grn bullets with the Secant ogives in my 303B produced less than desirable results until I seated them out beyond normal conditions which left me with the firm belief to just keep using the 174grn BTHP/FMJBT Tangent bullets seated to an OAL of 3.035" Set It And Forget It!!...