So in a New Strong Farqharsen using 9.3x74Rmm brass
necked open to 9.52mm (.375") and bullet weight is 335
grains, can I get 2400 FPS velocity in 26" bbls? If
yes how short can I go and still get the 2400 FPS, 20
inches? Thanks guys!

quote:

Originally posted by BigFiveJack:
So in a New Strong Farqharsen using 9.3x74Rmm brass
necked open to 9.52mm (.375") and bullet weight is 335
grains, can I get 2400 FPS velocity in 26" bbls? If
yes how short can I go and still get the 2400 FPS, 20
inches? Thanks guys!

Why don't you open up a cartridge case that way, measure its capacity in grains, and have someone run it through QuickLoad for you? That should tell you PDQ.

If it won't do it in 20", try having them do it for 21", 22" and maybe even longer barrel lengths for you. With that nice short action, even a 24" barrel won't result in an over-long rifle.

Good idea, thanks.

quote:

Originally posted by BigFiveJack:
So in a New Strong Farqharsen using 9.3x74Rmm brass
necked open to 9.52mm (.375") and bullet weight is 335
grains, can I get 2400 FPS velocity in 26" bbls?

Sounds like you will be going to a lot of trouble to duplicate the 375 Flanged H&H Magnum. It has been in continuous use for 100 years. Ammo, cases, dies, and reloading info are all available. Have you considered the existing cartridge?

About 375 Flanged:

"The cartridge is capable of firing a 235 gr (15.2 g) bullet at 2,800 ft/s (850 m/s), a 270 gr (17 g) bullet at 2,650 ft/s (810 m/s) and a a 300 gr (19 g) bullet at 2,500 ft/s (760 m/s) with muzzle energies of 4,090 ft·lbf (5,550 J),4,200 ft·lbf (5,700 J) and 4,160 ft·lbf (5,640 J) respectively. The cartridge is appropriate for all game species as the .375 H&H Magnum cartridge."

quote:

Originally posted by Grenadier:

quote:

Originally posted by BigFiveJack:
So in a New Strong Farqharsen using 9.3x74Rmm brass
necked open to 9.52mm (.375") and bullet weight is 335
grains, can I get 2400 FPS velocity in 26" bbls?

Sounds like you will be going to a lot of trouble to duplicate the 375 Flanged H&H Magnum. It has been in continuous use for 100 years. Ammo, cases, dies, and reloading info are all available. Have you considered the existing cartridge?

The .375 Flanged Magnum is a good cartridge. I have had aseveral DRs in that chambering. Though not as powerful with factory ammo as the .375 H&H BELTED Magnum, it was close...it also was not loaded by the factories to the same pressure levels as the belted case was.

One thing you want to be aware of though is that there was ANOTHER very popular flanged .375 made in a lot of U.K. rifles. It was the .375 2-1/2" Flanged. It was roughly the equivalent of the U.S. .38-55 as loaded in Britain.

There is the 369 PURDEY too; that fires .375" diameter bullets.
It's based on the 450 NE brass cut to 2.7" length and only had
the 270 Grain factory load. Obviously hand loading can give al-
ternatives. I wonder if IT could use a 335 grainer and be loaded
to produce 2400 fps?