6.5 Carcano Question

[Mr_Flintstone]

Are the case volumes close enough between 6.5 Carcano and 6.5 Arisaka to interchange load data? The Arisaka has a max pressure of 42,790 PSI and the Carcano 41,340. The reason I ask is that Hodgdon has data for Accurate powders for the Arisaka, but not the Carcano; and the published pressures are less than 40,000 psi for max loads.

 

[AJC1]

Are the case volumes close enough between 6.5 Carcano and 6.5 Arisaka to interchange load data? The Arisaka has a max pressure of 42,790 PSI and the Carcano 41,340. The reason I ask is that Hodgdon has data for Accurate powders for the Arisaka, but not the Carcano; and the published pressures are less than 40,000 psi for max loads.

Compare cartridge volume and if they are very close than using a start charge seem reasonable.

 

[AJC1]

https://www.google.com/url?sa=t&sou...oQFnoECAQQAQ&usg=AOvVaw1ogcMLDejKwY7L6XnAIkuF

 

[Mr_Flintstone]

Well, I finally found this at http://kwk.us/cases.html. I assume the 6.5 Jap is the Arisaka.

 

[GeoDudeFlorida]

Well, I finally found this at http://kwk.us/cases.html. I assume the 6.5 Jap is the Arisaka.

View attachment 1067480

They’re both based on the 6.5x54mm Mannlicher-Schoenauer (1900) which is based on the 1891 6.5x53mmR. I am pretty sure you can use 6.5 Jap low-starting loads as a medium-high load in the Carcano. The Carcano action condition will determine whether you can go higher.

 

[AJC1]

Click the link. Use the data I provided exactly for the cartridge in question

 

[Mr_Flintstone]

Click the link. Use the data I provided exactly for the cartridge in question

The Hornady data for 6.5 Carcano is actually higher than what is listed on Hodgdon for the Arisaka. I guess it would have been safe to use.

 

[AJC1]

The Hornady data for 6.5 Carcano is actually higher than what is listed on Hodgdon for the Arisaka. I guess it would have been safe to use.

Understanding a decision process is more important to me than just data. Being able to make reasonable assessments in your brain pan I believe makes you a safer loader.

 

[AJC1]

I got a new phone so I don't have it handy but there is a paper on military rifles and functional loads with red dot. It may be worth tracking down if your just wanting plinking loads.

 

[Mr_Flintstone]

I got a new phone so I don't have it handy but there is a paper on military rifles and functional loads with red dot. It may be worth tracking down if your just wanting plinking loads.

I think a lot of powders could actually work. I got an old Lyman manual that has loads for Unique and 2400 for cast loads. I imagine that 2400 and IMR 4227 could be used for jacketed too, but I haven't found data yet.