275 #2 rigby flanged vs. 7 mm H&H flanged


#1

What are the differences between these 2 cartridges?Only neck lenght?

Thanks


#2

I believe the rim is thicker on the .275 No 2.


#3

I read that the neck lenght is different too.
I have the 7 mm H&H but not the 275,could you post a picture of the two side by side to note the differences?
Thank you


#4

Pivi,
I don’t have either cartridge in my collection. :(

In Hoyem’s Vol III British Sporting Rifle Cartridges, he states that the rim is thicker on the .275 No2 as it was based on the .375 Flanged.


#5

The rim on the .275 No 2 is wider & thicker than the 7mm H&H. This is because the .275 No 2 is necked down from the .375 x 2.5 in Express while the 7mm H&H is a necked up .240 H&H or a necked down .375/.303. The neck of the 7mm H&H is also slightly longer.
Watch out for future editions of the IAA Journal - I have written detailed articles on these two cartridges.
I do not have a photo of these ctgs together for comparison - only individual photos at different scales.


#6

OK thanks.

John P-C,I found the 475 NE we had talking about