375 flanged mag nitro recipe

[Chill645]

Wanted run this by other, got a recipe from jj. 300gr bullet with 72-73gr of IMR 4350
270gr bullet with 75gr of IMR 4350
All with CCi 250 LMR primers.

Said it was what he used
Wanted to get an opinion weather load seem high for a flanged load. Weather it seem more of a belted load.

 

[KJE81]

I use Vihtavuori N160 for my doublerifle in .375 Flanged Magnum, my recipe is 77 grains N160, Norma cases, Federal 215 Large Rifle Magnum and Hornady DGX Bonded 300 grains bullets.

It is the very same recipe that the gun was regulated by the maker.

 

[Chill645]

Made up and test the load it shot great, accuracy not sure shot a water jug it exploded pretty good. But a thumper still with 270gr speer

 

[shootist~]

An accurate chronograph is a reloaders best friend. If you are over the max V shown in the reloading manuals, chances are you are over max pressure as well.

 

[Chill645]

Like to know which reloading manuals have 375 flanged magnum in them, as I can't find a recipe from any local books(USA). Not to worried as I got the recipe from JJ perodeau the gunsmith. I will eventually chrono the load only shot two loads so far and was shooting for fun and breaking the 7 month wait for the first shot with it

 

[frog stealer]

 

[frog stealer]

I’m having good luck with H4350 and the 270 Speer, though I don’t have a double rifle in this caliber (yet).

 

[Chill645]

Thank for the info, I will eventually get around to chronoing the recipe from JJ, if it high it nice to have other recipes to look to. Beside I'm not taking it to African right now so it doesn't need to be buffalo down and shoulder punching load.

 

[flatwater bill]

4350 has always been a favorite of mine, but never got the best accuracy out of it in the 375 or flanged. (Did get the highest velocity) IMR 4064 has been a better powder for me. 67 grains in the standard, 64 in the flanged.....(with 300's). Best of luck with your loads.............FWB

 

[Chill645]

One thing I did notice with the IMR 4350 is it is near or above the shoulder level so not alot of space to seat the bullet.

 

[frog stealer]

Going to try R15 next, seems to be the go-to powder per the Woodleigh manual.