guys i loaded about 2 days ago the horn 140 gr. btsp and used 46.5 gr. of h4831. recoil was about what i thought it was gonna be. but couldnt help notice the 45,000 cup the hodgdon website listed. then went to other cartridge listing with the same bullet, they listed 50,000cup. whats the difference. my brass is constructed the same as there's, my rifle is noted for its strength. really how high can i go? but i dont wanna blow up my rifle. who has modern rifle loads that i can look at?