Primers

[R. Cram]

I use 34's in my garand, M1A and to make life easier my 1903's and 1917's. supposedly slam fire chances are reduced on the old gas guns and adding primers to the other possibilities when developing a load doesn't interest me. I believe I have seen a difference when using ball powder for reduced loads I am fairly certain that I got better accuracy with magnum primers but I do believe that to really find out the results of changes in loads you have to shoot a lot of rounds. My last Garand I accurized just shot a 1 inch 5 shot group two days ago at 200 yds off my elbow with a sling and with my 67 yr old eyes looking through the good iron sights Garands have. It would be wonderfull if this rifle would actually shoot 1/2 min groups all the time but I know better than that, if it, with me looking through iron sights, could very repeatedly shoot 1 1/2 min groups that would be more realistic. I still took a picture of the 1/2 min group if I was smart enough I would put it on this post

 

[Hugnot]

Been using them for decades, don't see any difference. Don't know if they are "harder" than other primers but measurments show they have longer sides. Work real good with ball powders in cases having 60 or less grains capacity. Bought them when nothing else was available because shooters think they are inferior.

 

[Quinncannon]

The loads I shot in my LRB M14 and my SEI M14 was 41 grains of IMR 4895 with the CCI 34 primer, not a hot load, but good for M14 type rifles. The primer is hard too, reduces chance of slamfire. That was my 600 yard load.

I also used the 34's in my bolt rifles, my heavy 30-06 loads had no problems with them

 

[C-130 Dude]

Does anyone here use CC#34 or CCI#41 primers for precision reloading (600 - 1000 yard rifles)?

Advertised as: Mil spec. Relialble. good for preventing slam fires in semi-autos.

They're cheap and go bang. Not sure what shelf life would be.

Note to self- You have primers. I won't say plenty but you ain't hurtin.

Only for my AR guns.

 

[MagnumManiac]

I was under the belief that the #41 was a mag primer and the #34 was just a little hotter than 210M since many military loads are ball powder.

I use #41 in all my loads for ARs and #34 for the M1A most of the time

Neither are magnum primer spec..
From CCI, they have a harder cup and standard priming compound.
They are designed to be less sensitive to avoid slam fires in semi auto rifles.

Cheers.

 

[Jester896]

@MagnumManiac The only way I see them listed any more for either the CCI or Winchester #41 is Mil Spec small rifle primers.

here is an AI Overview...not sure if it pulled it from old CCI stuff or not.
The CCI #41 and #450 are both Small Rifle Magnum primers with the same hot mix, but the #41 is Mil-Spec with a thicker, harder cup and altered anvil geometry for slam-fire resistance in AR-15s/semi-autos, making it less sensitive to light strikes, while the #450 is a standard magnum primer, slightly easier to ignite but still hotter than standard small rifles, perfect for magnums or hard-to-ignite powders in any rifle. The #41's design makes it ideal for military rifles, while the #450 offers a bit more versatility for general reloading.

My understanding of the #34 is it is more like the old Winchester that was suitable for Std or Mag loads. At one time it even stated that on the package...I may have a few left.

 

[MagnumManiac]

The #34 primer I purchased said on it for standard 7.62 loading, nothing was mentioned anywhere that it was a magnum.
The literature I see also says mil-spec, no mention of #41 being magnum.

Cheers.

 

[Jester896]

I don't believe the #34 is either...just similar to the hotter flamed Winchester. You may not notice a difference with extruded powder but you might with ball. If the #41 has the same flame as the CCI 450 how can it not be?

 

[65x55Shooter]

I have used the #34's in my 1903-65x55 600 yard rifle and the #41's in my 722/22BR again for 600 yard target. I have tried CCI 400's in the 22BR, but have had some of the primers pierced with the 400's but not with the #41's. I don't notice any changes in group size compared with other primers.

 

[AD5GB]

Does anyone here use CC#34 or CCI#41 primers for precision reloading (600 - 1000 yard rifles)?

Advertised as: Mil spec. Relialble. good for preventing slam fires in semi-autos.

They're cheap and go bang. Not sure what shelf life would be.

Note to self- You have primers. I won't say plenty but you ain't hurtin.

Federal Magnum Match primers, for everything.