Magnum primers in .243

[.300wm]

Hi all,

 

I have a surplus of CCI magnum large rifle primers, no.250 I believe. I was wondering if it's ok to use these in my .243? There are plenty of differing opinions regarding this on U.S forums and would like some sound advice.

 

Regards.

[sonic]

Personally I wouldn't they are designed to light much bigger powder charges, You do not need them for normal powders loads in 243. For the cost of primers I wouldn't bother. If you must get rid of your surples swap/sell them with/to someone who needs them.

[EMcC]

I use magnum primers in my .243 because the powder I use is H380 and not particularly fast but does a marvelous job when lit with magnum primers.

In fact I use magnum primers in most of my reloads/calibres and have done for more than thirty years without problem. I find it makes all powders burn clean.

[Ratwhiskers]

Mag' primers equate to 1 grain of powder, so it's easy to back off then work up.....

 

I've found Viht 150 tends to like some Mag' primers.

[.300wm]

Thanks for the replies. Think I will just buy some normal primers to be safe.

[fizzbangwhallop]

I've used CCI lr magnum primers with H414 and 70grn Nosler BT's in my .243's over the years and it works very well - queried it with Mick at NC's a few years ago and he confirmed that the Magnums were good to get a clean ignition in the H414.

 

's me

 

Fizz