Forums.NitroExpress.com

Home | Ezine | Forums | Links | Contact NitroExpress.com: 375 H&H - Magnum or large rifle primer?

*** Enjoy NitroExpress.com? Participate and join in. ***

You are not logged in. [Login]

Main Index · Search · Active Topics
New user · Who's Online · FAQ · Calendar

Shooting & Reloading - Mausers, Big Bores and others >> Big Bore Rifles

Pages: 1

brewman
.224 member

Reged: 17/09/09
Posts: 10
Loc: South Australia

375 H&H - Magnum or large rifle primer?
#149754 - 07/01/10 04:51 PM

Hello all,

What primer would you use in a 375 H&H?

A lot of, if not most information recommends magnum primers but then some say large rifle primers are OK.

I have done some preliminary loads and just used CCI large rifle primers as that is what I had on hand and they seemed to work just fine.

The powder I used (ADI 2209) almost fills the case but is not a compression load, I have heard that using faster powders that do not fill the case so much are the ones that benefit more from magnum primers, but I’m not sure if this is in fact true.

Anyway just wanted to know if I am possibly taking any risks or posing any danger to be using large rifle primers.

Cheers.

Post Extras:

albertan
.333 member

Reged: 13/06/06
Posts: 432
Loc: Alberta, Canada

Re: 375 H&H - Magnum or large rifle primer? [Re: brewman]
#149756 - 07/01/10 05:01 PM

More than one "big name" reloading manual use Remington 9 1\2 magnum caps. I use them with both of mine with stellar results.

Post Extras:

FATBOY404
.400 member

Reged: 14/11/09
Posts: 1730
Loc: QLD

Re: 375 H&H - Magnum or large rifle primer? [Re: albertan]
#149772 - 07/01/10 07:52 PM

I run magnum primers in all of my rifles including my 6-223 . They seem to be harder in the cup & in some testing I've done they give 30 -50 fps more velosity over a standard primer with the same amount of powder.

--------------------
"WHATEVER BLOWS YOUR HAIR BACK"

Post Extras:

mauserand9mm
.400 member

Reged: 03/09/09
Posts: 1015
Loc: Queensland, Australia

Re: 375 H&H - Magnum or large rifle primer? [Re: FATBOY404]
#149777 - 07/01/10 09:47 PM

I use CCI200 (standard) without problems. AR2209 is a bit slow for the 375 and you may want to try AR2208. Most of the 2208 loads will be slightly compressed - I'm suprised that none of the 2209 loads are compressed since it is a slower powder and you use more of it.

I've only used magnum primers (CCI) for cast lead projectile loads (270gn gas check and 30gn AR2205) since there was a lot of free space inside the loaded case and it resulted in hang-fires. A filler can be used to the same effect instead of the magnum primer for the cast loads.

Post Extras:

Tatume
.400 member

Reged: 09/06/07
Posts: 1091
Loc: Gloucester, Va USA

Re: 375 H&H - Magnum or large rifle primer? [Re: mauserand9mm]
#149781 - 07/01/10 10:56 PM

It depends on what powder you're using, and to some degree where you are. My choice is 4350, which is not an extremely slow powder. The 375 H&H looks big, but isn't as big as one might think. Standard Winchester WLR primers work fine for me.

If you are using one of the very slow powders, or are in a very cold climate, or both, then magnum primers may be in order.

--------------------
Take care, Tom
NRA Life Member

Post Extras:

Ripp
.577 member

Reged: 19/02/07
Posts: 16072
Loc: Montana, USA

Re: 375 H&H - Magnum or large rifle primer? [Re: Tatume]
#149802 - 08/01/10 02:25 AM

I use Fed. 215 Mags in mine --work very well..

Ripp

--------------------
ALL MEN DIE, BUT FEW MEN TRULY LIVE..

Post Extras:

DarylS
.700 member

Reged: 10/08/05
Posts: 26672
Loc: Beautiful British Columbia, Ca...

Re: 375 H&H - Magnum or large rifle primer? [Re: Ripp]
#149809 - 08/01/10 03:40 AM

In the larger cases from 9.3x57 on up to the .45's, I usually use CCI250 primers for all powders, ball or stick from BLC2 to H4895.

Note that you should start your load development with the same primer - not switch part way through.

I'm saving my Fed 215's for my BP ctg. guns.

--------------------
Daryl

"a gun without hammers is like a Spaniel without ears" King George V

Post Extras:

Homer
.416 member

Reged: 07/04/09
Posts: 3081
Loc: Canberra, Australia

Re: 375 H&H - Magnum or large rifle primer? [Re: DarylS]
#149843 - 08/01/10 09:55 AM

G'Day Fella's,

Brewman, I recently mentioned elsewhere on this forum that my .375 H&H load is;

Remington .375 H&H Case
Remington 9 1/2 Magnum Primer
80grains of ADI AR 2209 (2600fps)
and
300 grain Jacketed Lead Bullets, Not Crimped in place!

Brewman, this is what I consider to be a "Maximum Safe Working Load" but This is Only in My Ruger Magnum B/A rifle!
You should reduce this powder charge by 5% (4 to 5 Grains of powder) and then progressively increase the powder charge in one grain increments in your rifle and component combination, all the time keeping an eye out for signs of excessive pressure!!!

I use Rem 9 1/2Magnum and CCI 250 Magnum primers in all my 08, -06 and Magnum size cases apart from my .22-250 AI and I use CCI BR2 primers in that.

Hope this helps.

HooRoo
From
Hommer

--------------------
"Beware the Lolly Pop of Mediocrity,
Lick it Once and You Will Suck Forever"

Post Extras:

mikeh416Rigby
.450 member

Reged: 24/02/03
Posts: 6051
Loc: The beautiful Oley Valley, PA....

Re: 375 H&H - Magnum or large rifle primer? [Re: brewman]
#149856 - 08/01/10 01:27 PM

Another vote for the Federal 215.

Post Extras:

greenshoots
.300 member

Reged: 23/05/08
Posts: 204
Loc: uk

Re: 375 H&H - Magnum or large rifle primer? [Re: mikeh416Rigby]
#149930 - 09/01/10 06:45 AM

i use cci large rifle and traiboss in my 1876 45/75
in my 45/70 double rifle with aa5744
and will be using them in my .375 h&h mag with cast bullets and aa5744/trailboss

viv

Post Extras:

4seventy
Sponsor

Reged: 07/05/03
Posts: 2210
Loc: Queensland Australia

Re: 375 H&H - Magnum or large rifle primer? [Re: brewman]
#149947 - 09/01/10 11:25 AM

Quote:

Hello all,

What primer would you use in a 375 H&H?

A lot of, if not most information recommends magnum primers but then some say large rifle primers are OK.

I have done some preliminary loads and just used CCI large rifle primers as that is what I had on hand and they seemed to work just fine.

Anyway just wanted to know if I am possibly taking any risks or posing any danger to be using large rifle primers.

Cheers.

The 375 H&H is a magnum size case holding a magnum weight powder charge, so IMO a magnum primer is a better choice for this cartridge.
Have a look through all the reloading manuals and see what primers they use for the 375 H&H.
Most loads will use a magnum primer.
Regarding risks, I feel there is a higher degree of risk using a standard primer in that size case than using a magnum primer.

Post Extras:

RigbyUser
.275 member

Reged: 23/11/08
Posts: 65
Loc: Victoria, Australia

Re: 375 H&H - Magnum or large rifle primer? [Re: 4seventy]
#167478 - 09/09/10 09:59 PM

Magnum primers make lots of sense in the 375H&H. Some of the posters mention that it is a large case but not overbore by any means. Whilst this might be true, standard H&H loads vary between 75 - 80 grains of powder. I think thats a lot of powder, especially in a long column. Magnum will guarantee you a result, whilst standard primers may hangfire under less than ideal conditions. Not great for what is essentially a hunting cartridge, often used on dangerous game. Just my 2c worth guys.

Post Extras:

GroovyMike
.300 member

Reged: 07/04/09
Posts: 229
Loc: NY

Re: 375 H&H - Magnum or large rifle primer? [Re: RigbyUser]
#167481 - 09/09/10 10:58 PM

I've never used a magnum primer. CCI 200 large rifle primers have worked just fine with every shot I've ever fired in my 375s. My powder of choice is Alliant's Reloader 15.

--------------------
Delight yourself in the Lord and He will give you the desires of your heart. Psalm 37:4

Post Extras:

Pages: 1

Extra information

0 registered and 46 anonymous users are browsing this forum.

Moderator:

Print Topic

Forum Permissions
      You cannot start new topics
      You cannot reply to topics
      HTML is disabled
      UBBCode is enabled

Rating:
Topic views: 6662

Jump to

NitroExpress.com

Home | Ezine | Forums | Links | Contact