.375 Flanged Reloading Question

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20 June 2012, 03:43

Dave Bush

.375 Flanged Reloading Question

Guys, I am in the process of putting together some flanged .375 loads using Jamison brass. Anyone have any suggestion as to powder, perhaps Reloder 15 or maybe H4340 and where to start?

Dave
DRSS
Chapuis 9.3X74
Chapuis "Jungle" .375 FL
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Krieghoff 500 NE

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20 June 2012, 03:53

505G

Magnum or 2 1/2" ?

Suggest Graeme wright's book, he has loads in that which you can convert to your powders if he hasn't already done so.

.

Previously 500N with many thousands of posts !

20 June 2012, 03:59

470drshooter

I use 60 Gr of Rel-15 (Butch Searcy load) with Fed 215 GM primer. Use pinch of fiber fill over the powder and 300 gr North fork bullets.

Hopefully will chronograph the loads in a few weeks, and have Butch tweek th regulation if needed.

20 June 2012, 05:06

Dave Bush

quote:
Originally posted by 505G:
Magnum or 2 1/2" ?

Suggest Graeme wright's book, he has loads in that which you can convert to your powders if he hasn't already done so.

.

Magnum. Good suggestion. I forgot about Grame's Book.

20 June 2012, 21:40

Mike Scott

Are there any of the other "cartridge books" that have 375 Flanged Magnum info besides G. Wright's?

20 June 2012, 21:46

505G

I haven't seen any.

I think Graeme Wrights book was data gathered from
users and his own data now he has one.

Previously 500N with many thousands of posts !

20 June 2012, 22:11

CowboyCS

"The Handloader's Manuel of Cartridge Conversions" by J. J. Donnelly
.375 Flanged Nitro Express(2.50")
Bullet - 285gr RN
Powder - 46.0grs of 3130
Velocity - 1890fps
Source - Barnes

For the:
.375 Flanged Magnum Nitro Express(2.94")
Bullet - 300gr RN
Powder 80.0grs of 4350
Velocity - 2500fps
Source - Barnes

Hope that helps.

Colin

20 June 2012, 22:13

CCMDoc

quote:
Originally posted by Dave Bush:
Guys, I am in the process of putting together some flanged .375 loads using Jamison brass. Anyone have any suggestion as to powder, perhaps Reloder 15 or maybe H4340 and where to start?

Dave,

I'll look tonight and PM you the data I've accumulated

NRA Lifer; DSC Lifer; SCI member; DRSS; AR member since November 9 2003

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21 June 2012, 18:59

McKay

RL15 would not regulate in mine. RL-17, and RL-19 were better. Could not get RL-22 or RL-25 to work as others here have suggested. If I remember correctly on RL-22 & RL-25 I could only get up to about 2375 before I ran out of case capacity.

21 June 2012, 19:08

Dave Bush

Guys, I have Gramee Wright's book. I don't know why I didn't think of that. I am going to try Hodgdon 4350 first starting at 72 grains using a 300 grain Hornady round nose. I am shooting Jamison brass.

I will keep you posted on how it goes. Thanks for all your help.

22 June 2012, 05:44

N E 450 No2

Personally for a 375 Flanged or a 375 H&H double, I would be very happy with 300gr bullets at 2300 to 2350fps. Easier on the gun, easier on the shoulder, and bad to the bone on game...