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Laurie loaded .308 Get ammo* with 16 LR primer varieties and then tested for normal velocity, ES/SD, and team dimensions. This can be quite possibly the most in depth and thorough LR primer take a look at at any time done. Here's the primer types tested:
Ah hah! That clarifies why the Speer manual, in the front section covering reloading heritage and subjects, only talks about CCI and Federal primers as though no other brands exist!
) We obtained them as PMC brand name in this article until that firm disappeared and when we get them nowadays, which is rarely, they use the Russian maker’s identify, Murom.
All powders show different "behaviors" .... even in the same cartridge when bullet weights differ. Therefore, you might come across a person powder/bullet blend likes a hotter flash whereas One more powder/bullet blend likes an extended flash duration (ie unique models). This can be proven by chronographing identical masses with different primer brand names, just like fx1974 did in his Original submit.
faucettb mentioned: Welcome to the forum 357bill. 1 thought is that if you utilize a Lee automobile-primary Instrument. They propose only the use of CCI or Winchester primers.
Experienced a go spherical with a few new Winchester .forty five Colt brass and Wolf large pistol primers, needed to chamfer the new brass.
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(The entire velocity unfold for all primers was 35 fps). That’s counter-intuitive and it’s odd that Rems ended up at reverse finishes from the speed spectrum among ALL primers analyzed.
(I had only explained which i was needing to use plenty of pressure on the handle to seat primers in professional cases.)
I can't seem to find any CCI large pistol primers. Every single retail store I visit all over here These are out. Have not been capable of get them for really awhile now, but could possibly get Federal large pistol primers.
Next I gained the Ginex primers at about $one hundred a brick. I discovered these primers challenging to seat flush (Certainly all primer seats within the shells ended up cleaned out.
.. the firing pin Electricity could possibly be underneath the brink for positive detonation. Light primer strikes with "duds" are noticeable but a primer that provides one thing lower than entire ability is just clear after you chronograph hundreds or shoot teams. I did many tests a few years back and burned up a pair thousand handgun primers in the middle of my tests. Here's a backlink with a few of my benefits ... Publish # 3 and #seven,
Individually, I exploit 210M’s or 215M’s when I go searching, dependant upon the cartridge. It provides me peace of mind. But I don’t know if you’d ever see a measurable difference between the two. Primers are amongst the cheapest elements we obtain, but can be essential to regular muzzle velocities … so I normally don’t test to save what only amounts to federal no 210 large rifle primers several pennies per spherical by picking out an ordinary primer around a match primer.