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Forum Index > Precision long range hunting and shooting > When to use magnum primers in standard cartridges

When to use magnum primers in standard cartridges

05 Feb 2020
@ 12:10 pm (GMT)

Joshua Mayfield

I feel like this has been covered either in the book series or in a previous discussion, but I can't find it. Are there clear principles of when it is advantageous to use magnum primers in standard cartridges? Conversely, are there clear times that it's a bad idea? I load for 30-06 and have only utilized standard large rifle primers so far. If someone knows where this has been covered and can point me in the right direction I'd be grateful.

Replies

1
06 Feb 2020
@ 11:45 pm (GMT)

Alvaro Piqueras

Re: When to use magnum primers in standard cartridges
Hi Joshua!

I think the only recommended situations are:

- shooting in very low temps

-when you are using compressed loads and/or hard to ignite powders... which, by the way, are the spherical ones.

When using standard powders, a magnum primer usually offers no advantadges... I´m using standard LR primers in almost any cartridge (including a 300Win Mag burning almost 75 grains of VV N165).

The standard primers usually are less finicky regarding ES. In terms of "pressure", usually when switching from a LR to a LRMagnum you have to drop your charge one grain to stay "in the same place" as before.

Only rifle cartridge I´m using magnum primers is a 338Edge burning around 100 gr of Re33

Hope this helps...
06 Feb 2020
@ 11:45 pm (GMT)

Alvaro Piqueras

Re: When to use magnum primers in standard cartridges
Hi Joshua!

I think the only recommended situations are:

- shooting in very low temps

-when you are using compressed loads and/or hard to ignite powders... which, by the way, are the spherical ones.

When using standard powders, a magnum primer usually offers no advantadges... I´m using standard LR primers in almost any cartridge (including a 300Win Mag burning almost 75 grains of VV N165).

The standard primers usually are less finicky regarding ES. In terms of "pressure", usually when switching from a LR to a LRMagnum you have to drop your charge one grain to stay "in the same place" as before.

Only rifle cartridge I´m using magnum primers is a 338Edge burning around 100 gr of Re33

Hope this helps...
06 Feb 2020
@ 11:45 pm (GMT)

Alvaro Piqueras

Re: When to use magnum primers in standard cartridges
Hi Joshua!

I think the only recommended situations are:

- shooting in very low temps

-when you are using compressed loads and/or hard to ignite powders... which, by the way, are the spherical ones.

When using standard powders, a magnum primer usually offers no advantadges... I´m using standard LR primers in almost any cartridge (including a 300Win Mag burning almost 75 grains of VV N165).

The standard primers usually are less finicky regarding ES. In terms of "pressure", usually when switching from a LR to a LRMagnum you have to drop your charge one grain to stay "in the same place" as before.

Only rifle cartridge I´m using magnum primers is a 338Edge burning around 100 gr of Re33

Hope this helps...
06 Feb 2020
@ 11:45 pm (GMT)

Alvaro Piqueras

Re: When to use magnum primers in standard cartridges
Hi Joshua!

I think the only recommended situations are:

- shooting in very low temps

-when you are using compressed loads and/or hard to ignite powders... which, by the way, are the spherical ones.

When using standard powders, a magnum primer usually offers no advantadges... I´m using standard LR primers in almost any cartridge (including a 300Win Mag burning almost 75 grains of VV N165).

The standard primers usually are less finicky regarding ES. In terms of "pressure", usually when switching from a LR to a LRMagnum you have to drop your charge one grain to stay "in the same place" as before.

Only rifle cartridge I´m using magnum primers is a 338Edge burning around 100 gr of Re33

Hope this helps...
06 Feb 2020
@ 11:47 pm (GMT)

Alvaro Piqueras

Re: When to use magnum primers in standard cartridges
Sorry!

Somehow the answer was posted a billion times! :(

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