ShootDots said:Several years ago I spoke with a "tech/ service person" from Blount International. They said that ALL primers, theirs and competitors options basically only make "regular primers"... The difference between a "regular primer" and a "Benchrest Model" of sorts, is nothing more than the addition of more extensive quality control. They merely LOOK for any possible "imperfections" in "regular" primers and if they VISUALLY see "better" primers, they become some form of a "benchrest" style primer! My personal experiences have borne this out by interchangeably using "BR" or GM and their "regular counterparts">>>ZERO difference in velocity, E.S. or accuracy>>> ZERO difference!
searcher said:I have also heard, as probably a lot of us have - that the primers are just seperated by the level of quality control. I have also seen a lot of evidence contrary to that as well though. The coloring difference of the priming compounds between the same "regular" and "match" primer from the same manufacturers, the reported difference in the cup thicknesses, the extra printing on the cup (like the C.C.I.'s match). I think there really is more to it in most cases. That said - the best primer is the one that shoots best in your rifle with your load...
searcher said:I might not be so fast to call anyone 100% wrong Bozo699 on this primer issue (but I sure could be?!) The common belief that a primer is a primer (seperated by quality control alone) got me thinking about how much I spend extra on match primers. Not as bad as the difference between Ely Match and Ely 10X .22 ammo which I have been told is the same except for quality control ($12.00 VS. $24.00 per box) Anyway- I looked at various manufacturers websites to gain more clarity for my own satisfaction. On C.C.I.'s website, they state their BR primers are more accurate because they:
1) Use specially selected cups - whichare then noted with the "B" indent on the face (which I had mentioned prior). You can clearly see the "B" on the primer.
2) Use specially selected anvils.
3)Have ther most skilled person running the mixture application process.
So far, it does appear that this is merely stepped up quality control to arrive at a benchrest primer - but NOT as a result of merely looking at batches of primers and picking out the good ones. It is a multi-phased Q.C. situation, at least with C.C.I. (maybe this is why theirs cost so much more than everone else?)
Now - what C.C.I. does NOT say is whether their cups or anvils are different, the priming mix is different and whether more of the mix (or less) is used from that of their regular primer. So I kept looking around a bit. I found a very interesting bunch of charts made up of varying sources (who knows whether to believe any) regarding burn rate, interchangeability, etc. Worth looking at. Go to Bing Remington Primer Chart on your search engine. I don't know how to forward this. Of particular interest was a chart which listed 9 common primers and the burn from "hot to cold" in ascending order. The hottest was Federal 205, yet the Federal #200 was #7. The Remington 7 1/2 was listed #2, while their 6 1/2 primer was #8.
Then, there was another chart for primer interchangeability - and the "common" primer of each manufacturer was NOT listed as the best replacement for any of the benchrest primers. This chart was from yet another source which lends credence to the fact that the benchrest primers are NOTprimers may differ in burn temp.
So - I'm personally still not sold they are "all the same". I do believe that many primers can be substituted (just as brass sometimes can) and still have about the same performance. Sometimes variables come out to the same conclusion.....
ShootDots said:Her Searcher.. When I called the "engineering / tech" person from Blount, it was HIS assertion that it (the difference between a regular primer and a BR primer) is merely the difference in quality control. He was the one who stated that is was just another "quality step" in "looking" for the best primers. That was maybe 10 years ago? Maybe they have changed since then>>>maybe HIS assertion was wrong in the first place>>>I don't know. BUT this is what I do know: "When I "run dry" of some sort of "BR Primer" like the BR-2 / Br-4, OR the Fed 205 / 210 "GM's" I have substituted the "regular" primer and found no difference. As a matter of fact, what I did one time since I was VERY low on BOTH BR-4's and CCI 200's I simply "mixed" both of them together (completely random) and went to a match with that concoction! It was a 300 F-Open match and if memory serves me correctly, I shot a 197-42X score! Not bad for "substitution"! At any rate, I was just stating what I was told>>>and I just stated what I did..
Mr. ShootDots,ShootDots said:Mr. Bozo>>>I stand corrected>>>200's are the large and 400 are the small>>>> I meant to say 400's of which I now have a decent supply... I mixed the BR-4's with the 400's... Now that we are on the same page, it still never changed my score at 300 yards.
searcher said:BOZO: I wish you would have earlier stated you repair the lines on the primer machines at all of these different manufacturing plants if that is what you are saying. In that light, I guess you have had a first-hand look at the components going in, were able to compare them, are thoroughly familiar with all aspects of the procedures, etc. at all of these different plants. If you do, I wish you would have brought this up. It would have helped those who DO believe everything they hear. You'll have to pardon me, because as I earlier stated - I don't believe everything I hear. I am not attacking your knowledge and am unsure about whether it was what C.C.I has on their website that bothers you (perhaps I should not believe that?) or the other website I mentioned, along with my statement "who knows whether to believe"? Don't let the fact that you don't agree with me get you so upset. It doesn't bother me a bit. Sorry if I offended you.