Home Forums Reloading Big Game Rifles What's the best improvement you've seen using Math Grade primers ?

Been rooting around the web for info on using match grade primers - some swear by them others say don't bother -some say waste of money others say the opposite .?.

Math was never my forte.




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Tried them a long time ago, didn't see any appreciable difference in accuracy.

Gave up on buying CCI BR primers as I never saw 20 bucks per 1000 difference between them and standard CCI. I still use Federal GM primers at times only because they are only about 4-5 bucks per 1000 difference between them and standard CCI or standard Federal. Again no appreciable difference that I can tell so most of my primer use is plain old CCI.

Maybe mathman will chime in

I asked jb the same question in the 3,5, and 10 shot group thread and all i heard was crickets chirping. Must have meant, he hasnt noticed a damn difference either. I bought 5000 br4's a while back for cheap and i havent noticed much of a difference in them compared to cci400 primers. Ive burned through 2500 of those in the last 6 months. Loads are all sub moa with them, but so are the ones with the cci400.

When I chronoed the two I saw maybe a 1 to 2 point reduction in sd and es, but no difference in velocity or grouping. I would have to fire up my laptop to get exact numbers, but the slight gain didn’t result in anything meaningful to justify 20 bucks difference.

Apple pie times the radias squared!


I have seen any improvement, but don’t own any target quality rifles. Using them makes me think I’m doing something to improve my loads.

Thanks I won't bother thinking about it again.
Plain old cci 200's have been fine .
Yeah $20 difference - that's nearly a box of bullets

Changing primers can change results in different rifles with different chamberings and different loads.
A generalization is inaccurate advise.

Sometimes you see a change and sometimes you don't.

I have a 7x57 that hates CC! 200's and a .30/06 that loves them. You can't guess, you have to try them and see how the results average out.
Both like Federal 210's but I only knew that after checking.

Sir, I wasn’t trying to discourage you from trying. I still shoot BR primers, but have gone to Federal GMM for large rifle. My BR2 are gone and won’t be replaced. The GMM works just as well as BR2 in 22.250, 220 Swift, 243 and 25.06 they are just cheaper. For small rifle I still have a box of BR4 to go through and they won’t be replaced either as GMM works just as well. I was really impressed with the Remington 7 1/2 BR. For the cost they are a damn good primer.
Performance to cost was the determining factor, and the CCI BR’s don’t justify it.

Being not far from the hood, I get Meth grade primers. They are the bomb

The only difference between cci 400 and BR is that the BR has a thicker cup

Thats good info, im sure the op will appreciate. I may just try those gmm and rem 7 1/2 BR as well. Thanks!

Literally

The one thing still not overabundant seems to be Federal Large Rifle Match primers. Could be they're good? They're definitely more mathy.

only br or match primers I use are Remington 7 1/2, 1. because Remington dont make regular small rifle primers. 2. I bought 25000 3 years ago for $16.00 a thousand. Between standard and match primers never seen a big advantage in a factory built guns.

I used to use a lot of the BR-2 "just because" and the price difference was small. I don't recall when the price gap jumped but that was it for me and the BR-2.

In the case of Federal primers, the only difference between match and regular primers, is that match go through one more inspection process than "regular" primers, nothing more.

Have you done any shooting with the S&B large rifle primer?