CCI BR VS STANDARD PRIMERS? ANY REAL DIFFERENCE IF SO WHAT?
CCI BR VS STANDARD PRIMERS? ANY REAL DIFFERENCE IF SO WHAT?
- Thread starter Performance Shooting
- Start date
In terms of overall charge strength the they were the same. The difference between them is the charge weight in the br line is more consistent.
Some more reading on the subject:
http://forum.accurateshooter.com/threads/benchrest-primers-vs-cci.3766077/
Some more reading on the subject:
http://forum.accurateshooter.com/threads/benchrest-primers-vs-cci.3766077/
they also have a thicker cup
MGYSGT
Silver $$ Contributor
I have also tested the difference between CCI 450 and CCI BR 4. I find no real difference. One test will be the 450's on top and the next time the BR 4's are on top. By on top, I mean a group of a few thou. difference. So it is probably me, no lets change that to, I am the problem not the primers.
In my case it depended on the powder used. I have 5 different 30 caliber cartridges that I compete with. When I was developing a load for my 30 Jaguar 2 (30x46 with a 35 degree shoulder), my load consists of between 43-46 grains of N133 I was having a tough time tightening up my groups consistently until I switched to the BR4's and that solved the problem that I was having. Thing is I have tried the BR4's in a couple of my rifles chambered in 30BR and those primers have produced the lousiest groups in both my Farley Black Widows each with Krieger's on them using either H4198 or N130. Go figure.
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When I used CCI primers, must be 10 years ago, I found absolutely no difference in group size between match and standard primers. Same goes for Federal which I use now.
However I use Federal 205 match primers in my 223's, not because if better precision but because they have a thicker cup than the standard Federal small rifle primers. I read (on this web sight) that the standard primers are design for less pressure cartridges like the 22 Hornet and the 205M's should be used in the 223 Rem cartridge.
However I use Federal 205 match primers in my 223's, not because if better precision but because they have a thicker cup than the standard Federal small rifle primers. I read (on this web sight) that the standard primers are design for less pressure cartridges like the 22 Hornet and the 205M's should be used in the 223 Rem cartridge.
I have had problems with every primer I have used except the CCI BR-4
If you have one primer problem during competition it has the potential to cost you the match. I will pay the extra $$
James Calhoon's article, posted on this website's Daily Bulletin on 3/5/2012 entitled "Primers and Pressure" states the following cup thicknesses:
Federal 200 - .019" (standard rifle primers)
Federal 205M - .0225" (match rifle primers)
The articles goes on to say..."cases that utilize small rifle primers and operate at moderate pressures (40,000psi) can use CCI 400, Federal 200, Remington 6 1/2 or Win SR... Other cases that use small rifle primers and operate at higher pressures (55,000) should use CCI 450, CCI BR4, Fed 205[M] and Rem 7 1/2."
So if I'm misinformed then this article must be wrong.
Below is a note from CCI tech support.
Actually BR4s contain the same amount of priming mix as a CCI 400 so they are not a magnum primer. BR4s do have a thicker cup and are more consistent than the 400s which makes them our benchrest primer. CCI 450s have a magnum priming mix and a thicker cup like the BR4s but with a magnum priming mix rather than a standard.
Actually BR4s contain the same amount of priming mix as a CCI 400 so they are not a magnum primer. BR4s do have a thicker cup and are more consistent than the 400s which makes them our benchrest primer. CCI 450s have a magnum priming mix and a thicker cup like the BR4s but with a magnum priming mix rather than a standard.
JEFFPPC
Gold $$ Contributor
You are looking at the wrong info for what you really need to know. Look at you targets, but perhaps more importantly look at what your chronograph tells you.
My chronograph puts the two very close as does my groups....I was looking for other shooters experiences....I've only done a few tests comparing the two. I did get a few answers that were very helpful.
JEFFPPC
Gold $$ Contributor
Compare your ES. Try more than 2. Try them all. You might find one that far outshines the others with a particular load/cartridge. I have all my ES down to less than 5 doing this.
Less than five sounds pretty good.
Dusty Stevens
Shiner
The chronograph is useless to tell you what a target does. Dont get hung up on that sometimes your best loads may show 30+ es
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