Now, Winchester has introduced a bullet that will make the quick-expander camp ecstatic by designing a new dedicated deer bullet that is a quick expander through and through. It’s called Deer Season XP, and I gave it a thorough tryout last fall. What’s most different about the Deer Season XP slug is a jumbo-sized polymer tip that is going to get this sucker down to business the millisecond it makes contact. The jacket is thin and the core, I gather, is pretty soft. Winchester’s rationale is that deer are generally small, light-boned, and fragile, so why use (and pay for) a bullet that’s designed for animals that are large, tough, heavy-hided, and heavy boned?