I'm going black bear hunting this spring with my beloved slug gun. I have narrowed my choice of slugs to two very different slugs that have great accuracy out of my barrell. I'm looking to either use the Lightfield Hybred EXP or the Winchester Partition Gold. The Lightfield is an all-lead design, 1 1/8 oz, 1454 ft sec, and really drops off after 100 yards. The Winchester is a copper-jacketed partition design, 7/8 oz, 1900 ft sec, and is accurate out to 200 yards. The lightfield is designed to NOT punch through both sides of a deer, even at close range, but for the deer to fully absorb the energy. The Winchester was not even slowed down by my deer at 30 yards this year. Should I use the slug with the best penetration and weight retention or the one that will knock it down like a truck hit it? The all lead worries me on a shoulder bone hit. Thanks.