Loading dies for 375 flanged

I just wondered if you could just use the regular 375 H&H mag dies on the flanged? Also for the pressure would it be wise to start 5% below the recommended start load??

 

You have summed up my understanding with two questions. Yes.

 

I own both of these guns, flanged in a double rifle and bolt gun for the H&H version. I have hunted both in Africa and elsewhere, I also reload both of these rounds. Along the way I have learned to never tell others what to do with their money, guns or wives. So do as you see fit with your guns.

Please note however that these are in fact two different cartridges released by Holland & Holland in 1912. The shoulders are different, 12 degree and 15 degree Flanged to Belted respectively, the shoulders are located in different positions on each case, the OAL is different, and the belted is generally a little more potent, 100 fps, over the flanged. I personnally would never try to load either case with anything other than the exact reloading equipment for that individual case. Notwithstanding the obvious concern I would have for safety, the possibility of a fouled cartridge in the rifle is simply to high. Additionally, double rifles are regulated to shoot a specific load, if you alter the load you will most likely change your impact point on your target, which while a lot of fun to shoot through, it can be a bit tricky to work up a handload that regulates well in your rifle.

Reloading dies are readily obtainable for either of these cartridges from RCBS amoung others. Subsequently, I would not personnally risk damage or injury trying to interchange one for the other.

Good hunting...

 

I have been offered a Verney Carron O/U double in 375 flanged. I think this is the modern variant that generates around 3400ftlbs, and here we need to get to 4000ft ibs. Is it possible to re- chamber this rifle to take the 375 H&H flanged?

 

Same cartridge different naming

 

Thanks 375FLM. From everything i have read recently, including Kevin Robertson’s recommendations, the 375 flanged at 2400 fps in 300 grain format is pretty ideal for everything up to and including buffalo. I am going to stick with that in my new Verney Carron and spend my energy mastering this beautiful O/U double. I have had to save for this thing, so now to savour it and have many memorable hunts.

 

Hope you will share a picture of your new rifle.

 

Here it is!

 

I bought a set of RCBS 375 H&H Belted Mag dies off a bloke who had been using them for years to reload for a 375 H&H Flanged Mag double rifle he used to own. He said they worked perfectly for either round.