To address this, I made a decision that I'd exam 5 various charges of a similar powder, H4350, Using the very same bullet (142 SMK). I loaded 10 rounds of each and every load in Each and every style of brass and fired two five-shot teams at 100 yards on the Ceremony inside the Rain Storm Sight Goal. I made use of a MagnetoSpeed V3 Barrel Mounted Ballistic Chronograph to collect data for each ten shot sequence. The circumstances applied On this round of tests are 2XF.
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I used to be really stunned to have noticed the higher ES and SD from that primer now along with the vertical demonstrated. [Editor: Glimpse meticulously — one particular shot in the CCI 450 is true in the center black diamond, stretching the vertical. In contrast the Rem 7.5 experienced almost no vertical.]
He then proceeded to shoot 4-shot teams, if you want, with each primer variety. Velocities were being recorded using a chrono. The Photograph higher than shows the results. James says: “I’ll retest the very best two for accuracy and regularity with ten pictures Each and every”. CLICK HERE for comprehensive-display focus on photo.
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Don’t understand how velocity and ignition stacks up in four hundred vs 450 in other cartridges but in my 7RM I’ve discovered A different 50 fps and reduced SD with significant magnum primers. Seems like @BFR noticed a smaller sized adjust higher than but nevertheless value considering around.
Amen... I've examined BR4's vs 400s. Unquestionably no variation in my rifles. Ive examined incredibly incredibly hot masses compressed masses with sixty eight-77gr bullets with 8208 XBR without any primer concerns with 400s, but eventually, best accuracy came by using a decrease powder demand so its a moot point.
I have not had a difficulty with cci four hundred's in ar's up to now and I've shot a handful of k of them prior to now number of years.
Seems like mostly superior practical experience. Though one member did say he and his staff have had some troubles with regard to piercing. I am about to try out it out at reduce than 50k psi masses.
About a month back I bought cci 400 primers notified about an in inventory sale of CCI #four hundred with this sort of rarity in primers I went ahead and acquired them for the cost of $150 for 5k primers.
Is there another chart the place it reveals you examples of which calibers fall beneath which primer groups?
The 6mmBR.com community isn’t pleased with just “very good accuracy” … but alternatively seems really like-minded during the OCD pursuit of perfection, and the website normally only listing hundreds discovered to create Remarkable accuracy.
Technical info and information contained herein 400 cci primers are meant to provide facts based upon the constrained working experience of people less than specific problems and instances. They do not element the comprehensive training, methods, methods and security safety measures which have been Unquestionably needed to appropriately stick with it related activity. Always talk to comprehensive reference manuals and bulletins for information of appropriate teaching requirements, treatments, approaches and safety safeguards before trying any identical activity. Be alert - publisher can not be answerable for errors in posted load information.
But for now the 400’s will probably be what I’ll be using for plinking and stocking aside till if and if the primer shortage finishes. I cci 400 will never pay out 10x the worth there’s sellers are giving them for.