Reloading Series: Expert Guide to Bullet Seating & Crimping
Once the bullet is seated correctly, it’s time to talk about crimping. The die we’re using can also apply a taper crimp, which is crucial for semi-auto pistol rounds like 9mm. The crimp irons out the flare in the case neck, ensuring smooth feeding and …
Crimping Advice And Tips For Reloading Handgun Cartridges
Feb 14, 2018 · Taper crimping is the preferred crimping method for the autoloading pistol cartridges and for revolver cases using bullets with no cannelure. A separate crimping die is employed, which will squeeze the case walls tightly against the shank of the bullet.
To crimp or not to crimp 9mm - SIG Talk
Mar 24, 2020 · Crimping a 9mm can be thought of as nothing more than removing the case flare. Every 9mm crimp/seating-crimp combo die is going to accomplish this via a taper crimp. From my experience, setting the die to remove/iron out all or almost all of the case flare is all that is needed with this handload.
Squeeze Play: How to Properly Crimp Ammunition - Handguns
Dec 17, 2012 · An over-crimped lead or plated bullet tells you it is unhappy by hurling patterns, not groups. For taper crimp, practical shooting reloaders have been doing it long enough to have hard measurements. Take the bullet diameter, plus twice the case wall thickness and then subtract .004 inch.
How much to crimp plated 9mm bullets? | Glock Talk
Jul 20, 2013 · There are several methods of checking that you have enough taper crimp without damaging the bullet (easily done with too much crimp). Use a case gauge, your barrel or a caliper. The first two are self explanatory - continue to "crimp" until the round will easily insert and drop out of a case gauge or your barrel's chamber.
To Crimp or Not to Crimp — That Is the Question
Feb 7, 2024 · Most believe applying a heavy crimp to the cartridge prevents bullet setback during feeding. That is not correct. Bullet setback — during feeding — is prevented by friction, between the sides of the bullet and the interior of the case.
Should 9mm ammo handloads be crimped? - TheGunZone
May 2, 2024 · Should 9mm ammo handloads be crimped? Yes, 9mm ammo handloads should be crimped to ensure proper bullet tension and prevent bullet setback during the feeding process. 1. Why is crimping important for 9mm handloads? Crimping helps to secure the bullet in place and prevent it from moving during the feeding and firing process.
Bullet Crimping - smith-wessonforum.com
Nov 10, 2024 · First, there is no amount of crimp in any handgun cartridge that can raise pressures to a dangerous level with normal loads, least of all a .38 Spl. wad-cutter load. The only issue with what he has done is to possibly negatively affect accuracy. So forget about possible pressure implications.
How To Reload 9mm For Competitive Shooting
Mar 19, 2020 · Taper crimping, instead of roll crimping, should always be done with the 9mm. The reloading process is straightforward. A three-die set (like the RCBS) will re-size and de-prime with one die, bell with the next, and seat the bullet and taper crimp it with the third.
Crimping 9mm luger - The Firing Line Forums
Dec 21, 2012 · The thing to read here is “taper crimp” as opposed to roll crimp. 9mm’s head space on the case mouth, rolled crimps cause problems on 9mm’s. A taper crimp is just swaging the case to the bullet. The amount of swage is determined by measuring the diameter of the case at the very case mouth with bullet installed.
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