CCI no. 34 primers

[Brian in Montana]

An acquaintance recently gave me 300 of these. Not sure what to do with them. Probably the closest thing to 7.62mm that I load is .308win. Any reason I couldn't use these in .308? How do they compare to CCI 200s?

 

[elkantlers]

They are designed to be harder to ignite so rifles with floating firing pins don't inadvertently set them off.

They would probably work just fine, but I wouldn't use them on a once in a lifetime hunt or anything like that.

 

[Elkmagnet]

I have used them in an AR10 in 22 250 And a Ruger american. They always went bang when I wanted never went bang when I didn't want.
You can probably work up a load for anything needing a large rifle primer with them.

 

[kodiakisland]

They work just fine in most rifles. They are just a little tougher so you don't have slam fires in certain rifles. As long as your firing pin spring is decent, they will go bang.
If you have a Colt Light Rifle with original firing pin spring, they most likely won't work.

 

[grizzly63]

They are magnum so reduce your load by a grain or two and work back up. I have not had any problems with them other than lever guns that have reduced spring tension on the hammer.

 

[yakimanoob]

I've been using them for several years now in my 7mm-08, as that was all I could find for awhile. I haven't noticed any differences or need to reduce loads from book values, but it's not like I'm running a strain gauge on my barrel

 

[Elkmagnet]

My velocities ran exactly the same as with Win LR primers but slightly higher extr sprds

 

[elevatorman]

I watched a very good video the other day on magnum primers in place of regular and the speeds were pretty identical. In other words it's a non issue. I was looking for a 243 as apparently everyone buys up LRs right now. I already have been only buying pistol primers in magnum. My 38 special loads don't care and neither does 44 special. Much easier to stock up only only one primer. I use them just fine for practice loads to full house loads. I am also talking about rifles. The video they reloaded same round shot out of same rifle over same chrono at same time. Only the primers were different. 3 LRs 2 LRMs. All with like 15 or 20 fps of eachother. I think primers matters much less than folks act like. Powders, now that matters very much. I would buy those no 34s in a second if they were a good price

 

[rideold]

I've been using them in my Rem 700 30-06 and my son's Savage 110 6.5CM for 3 or so years. I started low and worked up my load and it has been fine. I have not had any failure to fire in either rifle. Like has been mentioned it was all that could be found for a while.