The primer itself has no internal anvil, so the compound is pushed against the anvil part of the case to cause ignition. Both types are technically reloadable, but Berdan is a royal pain in the butt. Fortunately, most really all of what most reloaders deal with is Boxer cases and primers. Those are easy to remove from fired cases. As the flash hole is in the center, a pin in the resizing die simply pushes the spent primer out the bottom of the case. Easy peasy. There are four sizes of primers for common centerfire cartridges: small pistol, large pistol, small rifle, and large rifle.
Both are about. Large rifle primers measure about. Large pistol primers are a touch smaller at. As the name implies, they are designed to ignite with more enthusiasm. One example is Ruger. Most jacketed bullet loads for this caliber call for magnum primers, but lead bullet loads use regular large rifle primers.
The bottom line is this. Rely on published recipes exactly. You might find non-magnum calibers that call for a magnum primer. Or the reverse. Swapping a magnum primer instead of a regular can ignite a carefully calibrated charge way too fast and spike pressure to dangerous levels. Benchrest primers are simply those made with extra-special care towards consistency.
Any variance in primer ignition performance can result in pretty big differences in accuracy, velocity, and pressure. Even within one brand of standard primers, there is going to be variance in velocity and pressure.
The idea behind benchrest primers is that better primer to primer consistency will reduce that deviation, resulting in more predictable and accurate loads. Like many other things in the shooting world, you can get into trouble assuming too much from the name.
You know, like assuming that. In the primer world, you also have to be careful about making assumptions. Well, not necessarily. For example, while most. Winchester primers are just fine, and I use them without hesitation. CCI primers work like a champ in that primer feed mechanism. Just be aware that like anything else, there may be small differences from brand to brand. You might be surprised at the differences from that one variable.
Avoid handling primers with your hands. Oils and such from your skin can interfere with reliable operation later. Which did the same thing. I dug up a. Any ideas what would have caused it?
Headspace, soft primer cases, OS pockets…are about all I can come up with. Crimping them back in would work, if so. Rifle primers are a few thousandths taller than pistol primers, and hotter charged, so maybe between those two factors, it could back them out enough to bind up.
I would sit down with a once fired case or virgin brass — even better and a pair of calipers, and measure every dimension I could think of, compare it to four or five of the gift cases, and see what was what.
I would also look at the brass with a magnifying glass and check to see how many times it had been fired — faint marks from the extractor, lengthwise scratches from extraction, just whatever you can see. No big deal. For the record: No, the pockets were not oversized. No, rifle primers were not mixed up with pistol primers. No, excessive loads were not fired in this brass. Yeah, sure. Got a good laugh from that one. When you fire a loaded case, firing pin shoves the case forward, then the pressure of the primer firing, backs the primer out until the breech face stops it going any further.
The pressure caused by the powder burning in the case would normally shove the case head back over the primer, until the breech face stopped it getting any further too.
Varming Al Al Haral did some finite element modeling of rifle cases doing just that. How long had the cases been primed? There is not enough pressure to push the primer back into the pocket without gunpowder and a projectile in the case. If you have not heard of gluelits, look it up at castboolits. They are a hoot when it is too cold and snowy outside. I thought about that for a long time. For years I thought the ultimate answer must be the bullets in my rifle, but it never seemed quite right.
I mean, if there were three hundred million rifles throwing bullets at him, then maybe. And a lifetime vocation.
I owe my success to having listened respectfully to the very best advice, and then going away and doing the exact opposite. Paul Wilson. Heinlein, Double Star. What I want is a free society. Sandy Hook was a Gun Free Zone. So was the Westroads Mall. And the Aurora Theater. Should I go on? They were all Gun Free Zones. Why do the gungrabbers never mention this?
The human race divides politically into those who want people to be controlled and those who have no such desire. The former are idealists acting from highest motives for the greatest good of the greatest number. The latter are surly curmudgeons, suspicious and lacking in altruism.
But they are more comfortable neighbors than the other sort. If ever a man should ask you For your business or your name Tell him to go and fuck himself Tell his friends to do the same. For a man who'd trade his liberty For a safe and dreamless sleep Doesn't deserve the both of them And neither shall he keep.
Don't be afraid to try something big, just because you're an amateur. The Ark was built by amateurs. The Titanic was built by professionals. We who lived in concentration camps can remember the men who walked through the huts comforting others, giving away their last piece of bread. They may have been few in number, but they offer sufficient proof that everything can be taken from a man but one thing: the last of the human freedoms -- to choose one's attitude in any given set of circumstances, to choose one's own way.
The free man will ask neither what his country can do for him nor what he can do for his country. There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. The most dangerous creation of any society is the man who has nothing to lose. It is necessary to darken his moral and mental vision, and, as far as possible, to annihilate the power of reason.
He must be able to detect no inconsistencies in slavery; he must be made to feel that slavery is right; and he can be brought to that only when he ceases to be a man. Dance as though no one is watching you.
Love as though you have never been hurt before. Sing as though no one can hear you.
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