I really appreciate the insight here—this perspective helps clarify where the big calibers fit in. It makes a lot of sense that beyond 1,000–1,100 yards, it’s less about wind drift or terminal ballistics and more about splash and trace to ensure impacts are visible and corrections can be made.
I’m curious, though—when you’re running those large 338s with 300-grain Bergers or 285 ELD-Ms, are you typically shooting them out of big, heavy rifles to mitigate recoil? It seems like that would be critical to staying on target and making follow-ups manageable. Or can you manage a lighter setup at those ranges, provided you’ve got a good spotting setup?
It also sounds like this is a very specific use case that requires a particular skill set, nearly perfect conditions, and a large target like elk or bigger to make it practical. It's interesting how specialized the role of these "magnum" cartridges becomes when framed in that context. Thanks again for sharing your approach—it sounds like we were on the right track that heavy weight heavy for calibre bullets are for way out there; further than most people should attempt at game.
Yes, far out requires high BC bullets and adequate velocity. That is the case and always has been.
The only point of debate in my mind is what distance does it becomes reasonable to jump from say my future .22 creed to my present 25SST or 7 SS? Is that filled by the 6 UM.
The massive jump from 6UM to .338 defies some of the rationale as the single solution it is made out to be. And, it is not necessary. It works for Form and his skills/situation.
Credit to Form, I draw the line at 1000ish so would never have a need to go .338. I can’t comprehend the skill he has.
I don’t have much disagreement with Form or others. Except, I have never been one to see such bright lines, extremes, and absolutes. Everything is a cost benefit analysis.
I will try to shoot a 6 UM soon and maybe it will make me a believer. I shot thousands of the 115 DTACs out of a 6XC and 6 creed early on. Shooting my 7 mag was easier to see and shoot past 700 back then. My 25 SST is easier to shoot, and see, but I can’t discern whether it is because of the bullet size or my improvement over the years.
Clearly, Form’s skills allow him to shoot the 6UM to 1100. How much of it applies to me and others without skill, time, and money to shoot as much?
What if I don’t and can’t get his skills to see trace/splash?
What if I can balance a little more recoil of a 7mm and then can see the 180 VLD better?
Ask yourself, what about the jump all the way to .338 at 1100 yards? There is no “bright line” at 1100 that is so easy to draw, and so extreme.
Ask yourself, can’t a guy rationally and reasonably choose to use a 6.5 mm 147/156, 7mm 180, or 225 300 for the same reasons to hunt between 700-1000: to improve visibility, splash, etc.?
Have you ever tried to watch trace of a 115 going 3200 fps, let alone a 6UM? Compare that to a 180 VLD going 3050, the 180 is a bus. Slower is better to catch trace earlier.
The same reasons Form jumps to a .338 at 1100 are the same reasons that I am happy to jump to a 180 VLD at 700.
I can get enough range time to control recoil and have confidence in my ability to shoot the 7mm. A suppressed 180 VLD isn’t that hard to shoot well, and spotting trace of the slower bullet is that much easier, including splash.
There are real physical limitations and practicality of loading the ultra fast cartridges like the 6 UM for precision. It shows in choices for competitions.
So far, I have not seen enough of the 6UM. But, it contradicts the practical reasons that 1000 yard bench rest goes to .284, because of the level of repeatability and precision.
There are many examples where a more reliable cartridge that is not hot rodded is more accurate and precise over time. Even PRS with their 6mm, they load slow so they can see trace easier in addition to reducing recoil. The 6UM is much harder to see trace because of the velocity.
Look at all the winning “default” cartridges in benchrest, PRS, F-Class, etc. The ratio of powder to bullet matters. Short and fat 6BR, 6 Dasher/BRA, 284, 7 SAUM.
The 6 UM benefits from the short fat, but when it comes to ultra fast cartridges, there are historical limitations that I don’t think it has overcome.
I thought it was partly wind drift, but I was wrong. Doesn’t change the fact that 1000 service rifles are dominated by 308, even though the .223 have faster and higher BC bullets.