Mike why wouldn't the .303 brit be a better choice? I've read that the 2 1/2" .375 flanged is suppose to be a necked up .303 brit case. per google. The inclusion of ".375" in the cartridge's name leads to some confusion,[3] but a comparison of case base diameters suggest it refers to the older .375 Flanged NE 21⁄2, a naming consistent with other British hunting cartridges of the era such as the .450/400 Nitro Express, .577/500 Nitro Express, etc.[1] Since .375 Flanged NE is itself a necked-up and lengthened .303 British, .375/303 appears to be its second-generation derivative.
Last edited by Mike Harrell; 08/26/26 06:43 PM.
