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I realize a few of you have got carried out better loads than that, but I want to get precaution, simply a choice in my behalf, I am still in search of primers either magnum or nato spec primers.
Chronograph information with the magnum primers was indistinguishable in the chronograph info with the 400's.
He then proceeded to shoot 4-shot groups, to be able, with Each individual primer sort. Velocities were being recorded which has a chrono. The Photograph higher than displays the outcomes. James suggests: “I’ll retest the top two for precision and regularity with 10 pictures Every”. Click this link for comprehensive-display goal photo.
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I loaded and shot Many CCI 400 myself and never experienced a slam fire. As I mentioned nevertheless, I switched to making use of WSR or CCI 41 right after proving for myself how smooth the cups on four hundred's genuinely are. So The very fact you have WSR primers to load with now can only be a good.
Match primers ars alleged to be manufactured to tighter tolerances. That includes the amount of compound in the cup. So the amount of what ever a fired primer produces the match primers need to be additional regular. So Unless of course you intend on making use of them inside 400 cci primers a match rifle I might say go ahead and utilize the BR4's. Equally as a aspect Take note. I did a facet by aspect load function up applying CCI-400 and CCI-450s. From begin to greatest you could study the fired primers underneath magnification and couldn't explain to a single from Yet another. This was from the 20" A3 PSA upper. Motor
The information you've is from thirty several years ago. Back then mobile devices were not a point, now They may be and do crazy stuff the computers again then couldn't even dream of.
Having said that I am not pushing for max velocity cci 400 primers or powder cost so I have never experienced a problem to date. My male is just out of cci anything now and still has Winchester.
Once you eliminate ammo troubles like superior primers and damaged parts, You can find not Substantially to go Incorrect. I have 400 cci primers utilized most likely every single little rifle primer out there at a single time or Yet another, but "desire" the 7 1/two primer away from practice , availability, and price.
Quoted: Someway I ended up with a Brick of BR4 in place of 400's. I am now able to load up lots of 55gr plinker masses and that is all I have remaining. Should really I preserve the bench relaxation primers for precision masses? What 's the massive variation?
Looking at common deviation, I don’t see a clear winner. It does appear to be the 40.eight grain load has the lowest common SD among the masses.
I am undecided what the other guys had been managing back again then. But recall, it absolutely was the ninety's. The majority of the Competitors guns I saw at time had been some flavor or Yet another of COLT.
Yet again, the screening seems to raise much more concerns than offer answers. The only real definitive summary I'm able to draw from the data set to this point is this rifle seems to such as the 40.eight grain load the ideal in Starline brass.