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#3209318 - 03/31/13 10:18 AM can you replace large rifle primers with magnum
william martin
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Registered: 04/20/12
Posts: 248
Loc: va

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I cant find nd large rifle primers and was jst wondering if I could use magnum in the place and what I would need to do if I do so thanks
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#3209322 - 03/31/13 10:23 AM Re: can you replace large rifle primers with magnum [Re: william martin]
rdl65
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Registered: 03/08/08
Posts: 2491
Loc: Washington County

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I have before, just back off on the powder and watch for signs of pressure. Sometimes you have to light a fire with a different match when availability is an issue.

Edited by rdl65 (03/31/13 10:23 AM)
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#3209330 - 03/31/13 10:31 AM Re: can you replace large rifle primers with magnum [Re: rdl65]
Deer Assassin
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Registered: 08/01/03
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Loc: Kingston Springs

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yes but it may affect accuracy and POI


i have some "non magnum loads" for 7/08 i use a magnum primer for

i also use one for my .280

cci of course
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#3209337 - 03/31/13 10:39 AM Re: can you replace large rifle primers with magnum [Re: Deer Assassin]
william martin
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Registered: 04/20/12
Posts: 248
Loc: va

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yea thats true on lightn a fire and yea I found several boxes of cci magnums and in my area but zero large so I guess we will give it a try
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#3209387 - 03/31/13 11:33 AM Re: can you replace large rifle primers with magnum [Re: william martin]
Mausermeister
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Registered: 10/28/09
Posts: 249
Loc: Forked Deer River Bottom

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I use LR magnum primers in my 6.5-284 loads. Get much less velocity spread than with standard LR primers.
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#3210247 - 04/01/13 10:12 AM Re: can you replace large rifle primers with magnum [Re: Mausermeister]
MUP
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Registered: 08/01/07
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I've also been told that lg pistol primers could also be used for lg rifle applications, is this also doable w/o much, if any, load mods?
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#3210253 - 04/01/13 10:19 AM Re: can you replace large rifle primers with magnum [Re: MUP]
BirdDog123
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Registered: 08/17/12
Posts: 384
Loc: Tennesssee, US

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I'm not sure about the large pistol but as long as you "work up" your reloads you will be fine.

You may want to expirement with different powders as well. I had the opposite scenario where I had small primers but needed small rifle magnums. The powder I was using was not easily ignited by regular small primer but a few other powders were better suited for it. Play around with it and see what you come up with!

Could we get specifics on what caliber, primer, bullet, charge, powder you are using? That might help

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#3210260 - 04/01/13 10:27 AM Re: can you replace large rifle primers with magnum [Re: BirdDog123]
william martin
4 Point


Registered: 04/20/12
Posts: 248
Loc: va

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25-06 bolt gun 117g sst 4831 powder
243 single shot 95g sst 4831 powder
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#3210332 - 04/01/13 11:44 AM Re: can you replace large rifle primers with magnum [Re: william martin]
Hunter 257W
10 Point


Registered: 10/04/12
Posts: 3194
Loc: Franklin County

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Winchester LR primers are called Std/Mag primers. As always if there is any doubt whatsoever back off your powder charge and work back up watching for pressure signs. Especially true if the load in question is already operating at Max pressure.
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#3210375 - 04/01/13 12:28 PM Re: can you replace large rifle primers with magnum [Re: Hunter 257W]
BirdDog123
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Registered: 08/17/12
Posts: 384
Loc: Tennesssee, US

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you will not get the same results using the same charge with large primer vs. magnum but there are plenty of people who do use magnums in .243 and 25-06.. especially for bullets around 100grains and above. just work up and you should be good! let us know your results after going to the range.
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