And both of those have been around forever also, I was shooting a 300 Whisper back in the 90s, hornady just has a great marketing dept and someone decided to throw the whisper in an AR and call it the BO. I'd say probably the short mag cartridge has had the biggest impact on rifle cartridges since their development.

No need for any of them , just stay with what works. 243,25-06,270,280,7-08,7 rem mag, 308,30-30,30-06, 300 win or Weatherby . Any of those mentioned is more than enough for the deer in AL.

But if we started designing/inventing cartridges today there would not be any 243,308,30-06 not any of our traditional stuff anything with 20° shoulder would obsolete

Everything would be 35° shoulder or 40° shoulder and no case rim period
More velocity cause most(some) have body pushed out for higher degree of shoulder AI type cartridges,actually more stable powder burns,and better brass life cause of less brass flow cause of harder shoulder angle to stop brass flow as much....

Now I don't want my old school cartridges to be obsolete but

Just facts of more modern cartridges

Nothing feeds slicker or more reliably than a 375 H & H in a CRF action.

Virtually no shoulder, that damed belt, sloping case body.....

A perfect design for those situations when your hunting critters that can claw, stomp and eat you.

Yeah kinda like the idea of 357 sig being more reliable.yeah in theory the taper helps feeding but no one is carrying guns that don't feed...so it's just a good idea or a thought

A theory that has been proven for 110+ years.

Yeah I guess the idea is I'm talking about many cartridges your talking about a few cartridges.i understand what your saying especially if 375h&h was in a semi auto.lol. That taper is for helping smooth feed where it's needed

Just like they say 7.62x39 is more reliable cause if case taper we can see than 5.56 but many of use have never had a jam with and AR or 9mm .just look at at 9mm it tapers all the way.


But we are way off topic

If we vast majority of people designed cartridges tomorrow we would start with 30° shoulders and no belt no doubt.everything i stated would be a fact.imo.

Now I'll never get rid of what I got for a new cartridge but the new cartridges are what i stated above.

Your one of two on here I'm extremely surprised would disagree .
The harder shoulder makes for more uniform powder burn along with harder shoulder angle preventing less brass flow .more brass life . slightly

I don't know not trying to argue but seems all the cartridge designers and gurus are going this way for these reasons ?

I agree with you that 30 and 40 degree shoulders with less body taper are better designs for some things. They reduce throat erosionand tend to enhance accuracy, but the biggest reason the "new" cartridge designs tend to be better is the barrels. The throats have a tighter tolerance and the twist rates are tighter. Old way of thinking was to twist a barrel just enough to stabilize bullets of a certain weight and no tighter. This handicapped some cartridges like the 22 250, 250 Savage, 270 Winchester and others.

Twist a 260 Remington with a 1:8 barrel and a custom throat to match a 6.5 Creedmoor and it will outshine the new kid on the block. Oh, and a 3" magazine box.

Nothing against the new stuff but I'm more traditional than practical. I like some of the new developments in rifles, but you'll never catch me hunting deer with a barreled action mounted in a "chassis" Ugh...

I have stainless and fiberglass rifles shooting platic tipped bullets or high BC VLD bullets. But sometimes I like to tote blued steel in beautiful walnut shooting plain cup n core lead tipped bullets because I just want to.

Well amen I sure can't disagree with any of that.

And yes I've got a few 260 but yeah it's in a chassis but it's a dedicated long range heavy rig I'll never hunt with .it's strictly tiny hole puncher and steel plates ringer.the heavy non hunting one not my m77 old school hunting rifle
But yeah I agree with your saying all day

Merry Christmas 338 hope you have a good one buddy

I’d say series of cartridges being released like the WSM, RUM, Creedmore and now PRC with few oddities released.
The biggest difference went from overbore to precision with heavier bullets and faster barrels. It’s all marketing honestly to get folks to buy more stuff while picking nits.

AU338 is all over it and with all the anxiety that comes with the new stuff, the old stuff is gaining is cool factor back


I’ve gone off the deep end and researching the AR plaform

I watched one of the Vortex cartridge talk podcasts and they were talking about the Rem 30RAR. It seamed like something I’d be interested in if was still around today. They said it was loaded with a .30 cal 125gr bullet and had a muzzle Velocity of 2800fps.

So basically a 300 Savage ?

"Would you say the 6.5cm is better than the tried and true 6.5x55 in the hands of a reloader ?"

Not really but the fly in the ointment is the short action rifles with the 2.8" magazine boxes. The 6.5 CM was designed to hold roughly the same amount of powder and seat longer bullets without cramming the shank into the case and taking up powder space. A perfect example is the 6mm Remington. It has a 57mm case and if you want to seat a 100 gr bullet, most of it is below the neck to make it fit in a short action. If the gun makers had made 3" magazine boxes (Like Sako and NULA rifles) the creedmoor would have not been needed. The ideology that the short action is the answer to an accurate rifle took hold pretty quickly and introducing a new cartridge is less expensive than tooling up for a new action for just .02". But ...they didn't and the rest is history.

The Winchester M70 also has a 3" magazine box on short actions.