Dave,
I also believe that the whole Match King "controversy" ranks right up there with the ethics ********. Most of the individuals who are so adamant against bullet "X" do so based on one or two personal or rumoured instances. Kill as many critters as you do and then make a realistic assessment. Long ago I shot 62 deer one summer for a gov't study with a particular rifle, cartridge and bullet - that gives some real knowledge about what that combination will do. Unfortunately it is relatively hard to get that experience, although you are in a situation to pile up some good statistics.
I have probably seen as many deer killed as most guys and like Jerry, I have quit worrying about who made the bullet and what its construction might be. Deer simply do not require premium bullets, they die when any bullet goes through a vital body zone, destroying certain organs or systems. If someone's rifle shoots gold-plated, diamond tipped bullets very accuately - then use them but only if it give the confidence to make the lethal shot. Conversely the deer will be just as dead if someone shoots a piece of swaged lead through the same location.
I have seen bullets fail to perform as the manufacturer intended - usually on dead deer after extra shots did the job. A good example happened during a deer study many years ago. Hide and tissue blown away and virtually no penetration occured with a certain brand of 100 grain .243 bullets on six or eight consective deer. These were the only bullets available at the time and I had to kill a bunch of deer that trip.
Shortly after that incident the manufacturer just happened to announce, with great fanfare, that his entire line of bullets was being modified to ensure less fragmentation. I actually had a letter drafted to send to them telling about all the fragmentation I had just encountered but never sent it when I saw the announcement. They fixed the problem and I shoot a bunch of that brand of bullet still - just because of that one situation I sure as hell wouldn't black-ball that company.
Another bullet mistake that could be made is expecting a varminter like a 75 gr. .243 cal. hollowpoint to do the job of a hunting bullet. Again, fragmentation and wounding because of lack of penetration, but the bullet was never intended to penetrate. Have seen guys doing this, then blaming the bullet for the lost deer. It was there own stupidity that cost the critter.
As for confidence - we have to be reasonable. I could enjoy a hunt shooting your G-A Precision rifle as much as my own. For that matter I recently put aside the G-A and carried a Marlin 336 in .450 Magnum, still had a great day. Toys are great, but we have to shoot enough to develop and maintain skills in order to make clean kills. I believe that you could do quite well with about any of my rifles or any other regular's in this group. You pull the trigger enough that you are a much better than average shot (as are many guys reading this forum) and I know that you could adapt, it really isn't that hard to do.