"I killed up couple deer with my truck and the manufacturer does not recommend it even though it seems to work great!"
I really enjoyed the above quote. I don't claim to be an expert in extreme long-range hunting but I'm a genuine, certified expert in motor vehicle vs. deer accidents. I also have probably killed about 2 dozen whitetails in my life while hunting. And well over a couple hundred as a result of MV accidents. I'm a retired deputy sheriff from and extremely deer rich county in Nebraska and of the, about 20 years I've worked well over 1000 car/deer accidents. Many of these corn fed deer can be well over 200 lbs and I have known of some topping 300. [Sorry Texas but not everything in down there is bigger
]. About 30% or more of these deer were still alive when I got there. So from a range of around 2 feet I have killed a lot of severely wounded deer with .22lr, 380 acp., 38 spl., 9mm, 40cal. and 45acp. And some more at anywhere from 50ft. to 250 yards with a 22lr, 223 rem., 243 win., 308win., 30-06 spr., 12 ga. 00 buck and my former Sheriff's favorite, the 1 oz 12 gauge slug. You can decide which of the above is appropriate for range vs. bullet and most of you will be correct.
I have seen a 115gr 9mm JHP go through a doe's skull and exit out the bottom and she promptly jumped up and ran 3 or 4 steps, then collapsed and it was over. If I wasn't the officer that fired that shot I would not have believed it!
My point is no matter what pipsqueak round or teeth rattling shoulder cannon you have, it can work beautifully or fail miserably. As for our family motor vehicles vs. deer category, Our daughter hit 1, my wife got 2, I got 7 with one patrol car or another and 1 more with my pickup and it was broad daylight. And I was only putt-zing along at 25 MPH. What kind of deer can't avoid a pickup crawling along at 25?