RE: 400 yard trophy?
While I've already weighed in on this....I WOULD shoot...I thought I'd comment on the "stalking in closer" comments.
While every scenario is different, it's not ALWAYS impossible to stalk in closer. There will ALWAYS, however, be instances where you just never had a chance to get a shot...whether it's due to range or conditions, foliage, or even another deer walking in your bullet path...don't blame it on range or surroundings.
While it may not be the rolling hills of the western states, I've hunted pretty extensively in kansas, including western kansas, which is notorious for being flat, and dry. I've taken some fairly long shots, some over 400yrds on deer and antelope, I've also taken some very short shots.
I've also crawled on my belly for an hour and a half in ankle deep prairie grass to get within range of a herd of deer with my bow. Theyhad hungout at a little over500yrds on my LRF for almost two hours, never coming closer, so I left my blind and started crawling. I was inside the perimeterof their herd when I finally rolled up to my knees and tooka 200# 10pt from right in the middle of them. I take more time designing my outerwear for bowhunting so I'm able to do so, but it's not unreasonable to believe that if a lion can stalk for 5miles across the plains to get close enough to jump on a zebra, why can't I stalk a few hundred yardsto getwithin range to shoot a deer?
I've also had deer walk through so fast at 20yrds in more densely wooded areas that I didn't even have time to get my rifle up and get a sight picture.
Moral of my story...you can always stalk closer, but practiced shooting alleviates the need to do so.