Bob,
I got to wondering why it is only the .243 that you are hating on.
I think back to when I was younger and much funner but broke. I was shooting at a young age and reading about guns and dreaming of hunting everything and what guns might be useful. Somewhere in there I think I had a desire to have a Take Down bolt action Classic looking hunting rifle and I also thought I wanted a REM 700 Sendero .300wm
Now I owned a .22 and always thought a .22mag was close so the next step was a .222 (yes I’m that old or from that era) The logic was based if you could only have have a small selection based on budget etc.
As we know the .223 is popular now and is often used outside its size as an all rounder come hunting rifle and has possibly been used on every game animals the country offers even if it’s not suitable or permitted.
So nowadays I think a .22mag or .17hmr would be nice to have if I got out enough to use it but if I’m spotlighting I’m probably just using a .223 because I have it.
As things progressed I got a .22-250 at a good price and make use of it. Now it is a bit bigger than the .223 but still a .22 calibre. Not as big as a .243 case for capacity and just .019 thousandth’s of an inch in diameter smaller than a .243 cal. Well, maybe the .22-250 should be thrown in the “Neither Fish nor Foul” category too.
So a .243 is only 14 thousandths smaller than a .257 cal so what’s the big turnaround? A 6mm or n a bigger case could be fast and flat and still run on the heavy end of it’s spectrum it should be effective.
Why split the difference between .243 and .257 when the .264 (6.5) exists? Different countries etc I know but it’s splitting hairs if we go it’s 7 thousandths bigger and we all know a Creedmoor is so much better.
I’m sure there are Wildcats and lesser known factory rounds out there running various calibres but if the .25-06 is good a 6.5 projectile in a -06 case is probably better and has more projectile variants more readily available.
If the evolution of cartridge design were to start over would we need so many calibre options? The .14, .17, .20 were all done and the .17rem did one thing well and .177 slug guns are great trainers.
Many years ago I formed an opinion that the 7mm-08 would be versatile for Australia. In part based on it being a short action round that exceeds the .270” diameter requirement for some hunting requirements.
Probably 25 years later I had one but not in a true short action or hunting rifle. This was after owning several .308 rifles for hunting trading each one along except the last.
I like the 7mm cartridges but think the 7mm Backcountry is another that I don’t need but it is designed with around a optimising the cartridge in short actions and short barrels. Like the Winchester Short magnum chambering I’m not going down that path.
I think we have plenty of of coverage from small cartridges to large coverings many types of shooting.
Is there any reason to hate on the .243 if the .22-250 is a little lighter? The .22-250 probably excels as a Varmint cartridge but my mate always preferred the .220swift . The .243 is probably on the fulcrum where it could be a varmint cartridge or a hunting cartridge for small game.
I have a 6BR for target shooting that the gunsmith likened to a .243. With several 6mm cartridges now popular in the target shooting area like 6br, 6BRA, 6 GT 6BRX I expect there are some difference in performance but still similar based on personal preference and people driving innovation. Loaded like a .243 they probably perform like the .243
Is the .22-250 useless? I think not. Is is necessary in my line up? Maybe not but it has been set up the way I want it and I can use it spotlighting, Varminting or on the range.
Is the .243 useless? No, not the one we have in the rifle it’s chambered in the wife can use it in a variety of of ways and I expect it will drop Fallow with a good shot and the .243 should be hell on goats. I shot more goats with the .222 than I have with all the rifles I have owned since .