Thread: Random observation.

The load data of the 6.5 carcano, and the Creedmore are almost interchangeable.

ALMOST???????

Originally Posted by whanahuia

The load data of the 6.5 carcano, and the Creedmore are almost interchangeable.

I don't know what data you are looking at and it did not sound right. I checked and it is rubbish. Loads for the Creedmoor are 3 to 4 grains higher than the Cacarno for the same projectiles and powder. The Cacarno may have roughly the same case capacity as the Creedmoor but it is loaded to much lower pressure due to the rifles.
GPM.

Yeah given those factors, thats why I stated almost. Chamber a modern rifle in carcano and it looks to me like the margin would be slim.

Originally Posted by whanahuia

Yeah given those factors, thats why I stated almost. Chamber a modern rifle in carcano and it looks to me like the margin would be slim.

Greetings Again,
Perhaps it would have been better to state that then, rather than stating that the load data is "almost interchangeable" which is demonstrably untrue and dangerous. The 6.5mm Carcano was one of a number of similar cartridges of about that calibre adopted in the last decade of the 19th century. The aim was to have a lighter cartridge with decent performance compared with others at the time. Net case capacity approaches that of the Creedmoor but performance falls well short. The danger of the bald statement in the OP is that someone, with little handloading knowledge or caution, acquires an old Carcano with some of the Norma cases that were available at one time and stokes them with max Creedmoor loads. The results could be disastrous especially if they used .268" projectiles.
Regards Grandpamac.

ah yes...BUT they would be perfectly safe to use carnaco maximum load data and poke it in a creedmore..........

so in one respect it is....

amazing how many similar cases are out there and how SIMILAR a lot of loads are across the board. a year or two back there was a favourite .223 loads thread.... lots of folks use a very similar load and strangely enough some fellas use more powder with heavier projectiles than I use with 50-55grn projectiles..... my theory is by not being hot rodded everything lasts a bit longer and Ive got wiggle room to hopefully build in a wee buffer if something is wrong somewhere I do not know about.

Greetings @Micky Duck and @whanahuia,
Yes Micky the world is awash with legions of very similar cartridges. Some of this is due to not invented here snobbery, some to marketing new and improved and occasionally the development of a new military cartridge from an old favourite. The 6.5 Creedmoor and .260 Remington data is largely interchangeable but due to the faster twist and shorter case length of the Creedmoor it can handle the longer, heavier high BC projectiles now favoured by many.
To @whanahuia, don't be discouraged because some old grump has taken you to task over the accuracy of your statement. I found a photo of the 6.5 Carcano and the 6.5 Creedmoor while I was looking on the interweb yesterday and was a little surprised how similar they looked. You are correct in that a modern rifle chambered for the Carcano cartridge would approach the Creedmoor performance. I have not heard of any one doing that but would not be surprised if some far gone rifle tinkerer somewhere on the planet had done just that.
Regards Grandpamac.

.22hp savage Vs fast twist .223......heavy pills
300blackout VS 30/30 heavy and slow or light n fast
7.62x39 VS .32/20 subsonic there isnt much in it
.303brit VS .308 always been very similar
.270w with 110 grn Vs 25/06 with 110 grn Vs .30/06 with 110grn same parent case just skinnier hole to poke it out of....
all spring to mind
plus the .222 BOOK LOADS are what Ive loaded my .223 with for years...the 24.5grns of AR2206h with 50grn projectiles.

When I re-barreled my 243 I was convinced a 240 weatherby was the answer. After talking it over with gunsmith he pointed to the 6mm/06 as a better round to reload and easier to get cases.By the time I dropped the rifle off I was back to the 243 and have never regretted it.I never load full reloads in my rifles anyway so capacity would have been wasted in this instance.Out of a dozen rifles only the 260 is loaded to its full potential. I'm even looking for light loads in the 50 cal now so chasing the last fps is a waste of time unless you have a dire need for it.

Originally Posted by grandpamac

Greetings @Micky Duck and @whanahuia,
Yes Micky the world is awash with legions of very similar cartridges. Some of this is due to not invented here snobbery, some to marketing new and improved and occasionally the development of a new military cartridge from an old favourite. The 6.5 Creedmoor and .260 Remington data is largely interchangeable but due to the faster twist and shorter case length of the Creedmoor it can handle the longer, heavier high BC projectiles now favoured by many.
To @whanahuia, don't be discouraged because some old grump has taken you to task over the accuracy of your statement. I found a photo of the 6.5 Carcano and the 6.5 Creedmoor while I was looking on the interweb yesterday and was a little surprised how similar they looked. You are correct in that a modern rifle chambered for the Carcano cartridge would approach the Creedmoor performance. I have not heard of any one doing that but would not be surprised if some far gone rifle tinkerer somewhere on the planet had done just that.
Regards Grandpamac.

Dont worry GPM, Im not discouraged. I guess rather than being exact, my point is that we tend to go for the new flash product, and ignore something existing because its not popular. In my time the Carcano has pretty much always been described as low performance and under powered. Yet now the Creedmore seems to be the most popular round out there?

Originally Posted by Tedz50

When I re-barreled my 243 I was convinced a 240 weatherby was the answer. After talking it over with gunsmith he pointed to the 6mm/06 as a better round to reload and easier to get cases.By the time I dropped the rifle off I was back to the 243 and have never regretted it.I never load full reloads in my rifles anyway so capacity would have been wasted in this instance.Out of a dozen rifles only the 260 is loaded to its full potential. I'm even looking for light loads in the 50 cal now so chasing the last fps is a waste of time unless you have a dire need for it.

Greetings @Tedz50,
The 6mm-06 has been linked to erratic pressures with sub max loads of slow powders so you chose well.
Grandpamac.

Originally Posted by whanahuia

Dont worry GPM, Im not discouraged. I guess rather than being exact, my point is that we tend to go for the new flash product, and ignore something existing because its not popular. In my time the Carcano has pretty much always been described as low performance and under powered. Yet now the Creedmore seems to be the most popular round out there?

Greetings again,
The Carcano suffered from never having been chambered in sporting rifles plus being chambered in a military rifle that was a bit of an oddball by anyone's standards. It seems that, like me, you have an interest in older rifles and cartridges. Many of my rifles are chambered for cartridge from the century before last and only one (the most expensive) is from the current century. Regrettably it does not get out much.
Regards Grandpamac.