What people have to realize that you can't just pick up a factory rifle/scope/ammo and perform long-range shooting on animals. For me, it's been life-long shooting of rifles, beginning with varmints at long range as a kid. There I learned about breath control, overcoming bad triggers, having a proper rest or fine bipods. As a teen I shot competitively at school. It was then I got into (after living through it and reading many, many books on accurization and long-range shooting) elements of gunsmithing, proper scope selection-for-caliber, alignment, height/trigger/stock/bedding and handloading. My son and I have made plenty of 450-750 yd shots when varmint or antelope/deer/sheep hunting, when we've run out of cover and that's the only shot we're presented. This is a very broad subject, but boiled down, I'll say this: For <400ish yd shots, I'd say factory rigs w/ trigger jobs/bedding/quality optics/mounts and high-end ammo should do the trick. If you wish to extend that a tad, I'd say all the above plus a semi-custom factory rig (guns costing $2K-$3K) and handloading. IF you wish to make consistent shots under 1,000 yd I'd say you need the tool to get it done: $5K-$10K fully-custom rig (I like Bansner's Ultimate Ovis, but there are and handful of greats out there!) using the finest barrels, mounts, optics, also handloading and bullets designed for true longer range shooting (Berger, etc.) You'll also need a quality rangefinder and a scope that's set up for your particular cartridge/bullet ballistics. For long-range shots, I prefer .264 and .338 caliber because those long-and-narrow bullets have some of the highest BC and if heavy for caliber high SD as well. (There are of course now similar for 270/7/30, but we've had great success with (low-recoiling, super accurate) HOT 264s and big 338s as well. I remember a mtn goat guide swearing by .338s if you don't want fake horns on your mount!

Also great for African PG. When you have quality equipment, you'll find that taking a 400 yd shot is no different than 100 yds. You'll also find that you can confidently take a 300 yd shot off-hand using a sling (or better yet proper elbow-on-knee kneeling/sitting/prone positions using just your sling and body parts for support.) Sitting with longer bipods fully extended has resulted in some spectacular longer shots. I've seen many hunters with benchrest length bipods and SMH (How the heck are they going to work when the grass is taller or when you have to sit up??) Harris Bipods eliminate the need for 2 sling swivel mounts (they have an additional sling mount on-board.)
From lifelong experience, I do like a good challenging hunting shot on occasion, but most deer/bear/varmints at home, and African PG, have typically been well within 200 yds (chip shots IMO.) That's why the "core-lokts" and any gun of appropriate cartridge will generally get the job done! The longest shots have been at Aoudads (W. African Barbary Sheep) across Hill Country canyons in TX. The weather (sunny, calm, warm) is perfect for such shots, also shooting atop solid rock, so that 750 yarder (actually uphill, so 750 ballistic yards but 825 actual yards away. Get a rangefinder that compensates for angle, or simply subtract 10% for steep up- or downhill shots. Where I live, in the second week of the deer season it's typically windy, sub-freezing, snowing, dim light....I often have to draw the line at 400-450ish yds under those conditions (and again, it's a rarity.) All of my hunting rifles are capable of 400-500 yd shots at home, but a few are capable of double that (or more, but then I'd just be shooting at paper (or varmints) for fun!)
When you stalk as close as possible to that Kudu of a lifetime (at 67 yds with your 7mm STW and premium Everything), do shoot that beeste! lol Those guns are more for the "what ifs." What if defines mountain hunting in AK, Canada and the Himalayas, et. al.!
"Good enough for Gov't." (excepting the finest sniper rigs and training) doesn't cut it in Long Range Hunting.