To deal with this, I decided that I might exam 5 different prices of precisely the same powder, H4350, with the exact bullet (142 SMK). I loaded 10 rounds of each and every load in Every variety of brass and fired two five-shot teams at a hundred yards on the Ceremony within the Rain Storm Sight Concentrate on. I utilized a MagnetoSpeed V3 Barrel Mounted Ballistic Chronograph to collect data for every 10 shot sequence. The circumstances used During this spherical of testing are 2XF.
Many audience commented which i was comparing the “finest” massive rifle primer to the inferior tiny rifle magnum primer and suggested a comparison of a similar manufacturer primers. To that stop I have recurring a similar examination in between the CCI 200 (typical substantial rifle) and also the CCI four hundred (normal small rifle) primers.
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The WSR is considered a magnum primer by Winchester and was developed especially for Winchester ball powders. There are actually regarded concerns With all the normal (i.
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I loaded and shot A large number of CCI 400 myself and never ever had a slam fire. As I claimed although, I switched to employing WSR or CCI forty one following proving for myself how smooth the cups on four hundred's genuinely are. So The actual fact you've got WSR primers to load with now can only become a constructive.
Match primers ars purported cci 400 primers to be created to tighter tolerances. That includes the amount of compound while in the cup. So the quantity of what ever a fired primer produces the match primers needs to be much more consistent. So Except you intend on utilizing them 400 cci primers inside of a match rifle I would say go on and utilize the BR4's. Equally as a side note. I did a aspect by side load do the job up using CCI-four hundred and CCI-450s. From start to utmost you might study the fired primers underneath magnification and could not inform one from One more. This was from a 20" A3 PSA higher. Motor
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Nearly all the content is made by authorities in the field, so unlike other online sources … it isn’t just a few random man publishing load facts he statements is exact and/or Safe and sound.
Following a number of associates with the staff skilled a similar trouble (this was with regards to the similar time we had been all transitioning from M1A to AR15 for Competitiveness) the group all switched to MAGNUM primers, and the problem went absent totally, with all masses and all guns employed by the workforce.
Thanks. As for prime pressures no I figured It will be also dangerous in the two harming my bolt, or worst case circumstance injuring myself. These loads is going to be exclusively for plinking and storing if I don't have any resort for STFH back again up rounds. But yeah not designed for higher force hundreds that of NATO specs.
I didn't use the round-robin process. Each and every 4-shot group Along with the exact was shot at one particular time. Then I moved on to the following primer. Everything felt proper for every and each shot fired right 400 cci primers now. Certainly I could repeat the check tomorrow and it could be actual reverse of now’s examination. We could chase this forever. But [quickly] I’m gonna exam the BR4 and four hundred primer… for ideal precision and regularity for ten photographs Every.
I normally article this pic for crimp removal assistance, front drill. Hornady crimp reamer with beneficial quit.
But a thinner-cup primer is simpler for outdated guns with weak hammer springs to ignite. Presumably if you are capturing an outdated gun by using a weak hammer spring, You furthermore may realize that loading it to 62,000 PSI is unwise.