.223 black rifle. Magnum or reg primers

[SKIBEEDOO]

I did not give it much thought till now. I had a guy tell me to use magnum primers in everything. Can someone explain to me in detail what I have lost by doing this. I feel that I made a step backwards. Picked up regular primers and will start reloading with these.

 

[AB.boy]

I dont know why someone would tell you to do that. Do what your loading manual says and likely save a few pennies each round and use standard primers.

 

[fivehundredlimited]

Most of my 223 recipes in my books do call for magnum primers, but I do have one that calls for standard primers, AB boy is right, stick with whatever your manual tells you. If you want to know what load I have that uses standard primers let me know and I will dig it up for you.

 

[Trinimon]

I've never used mag primers in my 223 loads. But if your manual calls for it for certain powders, far be it for me to suggest otherwise.

 

[SKIBEEDOO]

I am going to try the Berger 64 grain Varmint in my 1:7 twist and 1:9 twist. Did not want to buy the book yet until I have shot a few rounds. I have varget powder or IMR 3031. Thanks.

 

[OldDude]

I've used regular primers in my .223 AR loads, with extruded powders. There are guys who use magnum primers with ball type powders.
In any case, normal load development procedures are a good plan - start low and work your way up.

 

[PitBull1973]

No mag primers in my loads. Just regular or bench rest

 

[BlackSheepBrass]

If you your data segregates it will probably indicate for ball powders use magnum primers. Ball powders can be difficult to set off reliably in cold weather. I have never experienced a misfire in cold weather with standard primers, however I am not shooting much outside below 5 degrees centigrade.

 

[Cummins]

Magnum primers have a harder cup and are less likely to slam fire with a floating firing pin that said I've used both and bought a case of federal ar match primers and I like them have used regular with no problems, keep the firing pin chanel clean.

 

[*MALICE*]

I have run some wicked hot .223 loads in my AR15 with regular CCI 400

By the time you start ejecting primers you've gone past SAAMI limits by a decent amount anyway.

And I use H335 which is about as ball as it gets.

 

[Spawn-Inc]

I use mag primers mostly because they are always in stock but I do use standard as well.

 

[bigedp51]

I load a lot of ball powder in my .223/5.56 reloads for my AR15 and use the Remington 7 1/2 primers. Remington ran Lake City Army Ammunition Plant from 1941 until 1985 and used the 7 1/2 primer in all the 5.56 ammunition.

 

[BillD]

I load a lot of ball powder in my .223/5.56 reloads for my AR15 and use the Remington 7 1/2 primers. Remington ran Lake City Army Ammunition Plant from 1941 until 1985 and used the 7 1/2 primer in all the 5.56 ammunition.

Geez, why even use powder at all with those!

 

[Ganderite]

If you are loading near max with a ball powder, a regular primer will work. But if you are loading a mild round, the powder will need all the help it can get to ignite. A magnum primer and a firm crimp helps.

 

[*MALICE*]

If you are loading near max with a ball powder, a regular primer will work. But if you are loading a mild round, the powder will need all the help it can get to ignite. A magnum primer and a firm crimp helps.

I was going to mention that because I was pretty sure you had done some experimenting but I wasn't 100% of it was you or someone else.