Senior Product Manager Kent, shows you how to well crimp your case mouth to save you the bullet from moving beneath recoil!
That's a complicated question. To crimp ammo is to simply apply pressure around the case mouth and squeeze the case against the bullet jacket. Some reloaders say it helps accuracy, and some say it deteriorates accuracy. The theory is that crimping ensures uniform neck tension with each crimp being the same from bullet to bullet.
Jan 4, 2011.
To feed smoothly, the cartridge ought to be precisely so long–not and no shorter. And, due to draw back, the bullet needs to be firmly crimped.
So, usually, there is no need to perform a separate crimping step with a bottleneck rifle cartridge. If the projectile (bullet) you’re the use of has a cannelure band, you could follow a crimp to assist stable it in location, but you don't must. Since you're running with a bottleneck cartridge, you can use both a taper or roll crimp.
Rifles having tubular magazines, such as the Winchester Model 94, also require bullets to be firmly crimped to prevent their being forced back into the case under recoil. Neck tension alone should be enough to prevent this from occurring, without resorting to excessive crimping. We regard this as a poor solution to an easily cured problem.
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You do no longer want a bullet with a crimp groove due to the fact this die will make it's very own. From my very own experience this doesn’t break the accuracy of the bullet, even in shape bullets. One other advantage of this crimp I even have observed is which you don't should go through that discover the lands and "right" seating intensity process.
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Feb 14, 2015.
You do not need to crimp any rifle cartridge except those with heavy.
Oct 15, 2010.
It's just some thing you need to experiment with. But whilst you are honestly going for first-rate accuracy with a bolt movement and your ammo might be in a.
Rifles having tubular magazines, such as the Winchester Model 94, also require bullets to be firmly crimped to prevent their being forced back into the case.
So, lower back to the basic query of "to crimp or not to crimp," the solution is yes – with qualifications. The type of crimp can be decided by the cartridge you're reloading, in order that's an clean choice. The vital issue to keep in mind is that crimping is not a corrective technique for sloppy seating.
Rifle handloaders also often count on the case necks of certain cartridges clearly have to be crimped or the bullets may trade seating intensity for the duration of flinch. There are two issues with this assumption. The biggie is the tightness of the case neck around the bullet generally has some distance extra preserving electricity than crimping the case mouth.
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May 22, 2017.
If the cartridge is to be used in a bolt-action rifle, and the cartridge was properly loaded, then crimping is not required. If, on the other.
Reloading Rifle – To Crimp or Not to Crimp? That is the question.
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bigedp51 Aug 19, 2014 #8 You have three choices. 1. Decrease the expander button diameter for increased neck tension and no crimp. 2. Stab crimp like the Lee factory crimp die. 3. A taper crimp like on the RCBS AR series dies NOTE: Number 1 and 2 are more forgiving with case length and crimping. Warren Dean Team Savage F-T/R Aug 19, 2014 #9
Several elements averted it. Factory bullets have cannelures, a slim band engraved around a bullet's shank with small, vertical grooves just like a washboard. The softer brass case mouth is pressed, or crimped, into the cannelure so the ridges keep the bullet steady inside the case.