the only problem i can see with the 286gr Hornady is if you want to crimp at the groove. it was designed for the 9.3x74r, so, your intended velocities should work well. the 9.3x62 has a shorter neck the the x74r, which means that if crimped at the groove it may encroach on powder space or not give you your desired OAL. YMMV
advntrjnky
