View Full Version : IS there a difference between FMJ and lead?
shootem45
05-16-2007, 10:37 PM
To some of you affiacianados you may be scratching your head at the silliness of this question unless it is not that unsual a question afterall.
I have plenty of 230g lead bullets to reload for a Bulls Eye match--but the flyer said the bullets must be 230 grains FMJ--is there a different between the lead and FMJ or is just a different way of saying it?
If there is a difference what is it? :confused:
faucettb
05-16-2007, 10:49 PM
Yes, though a full metal jacket bullet may have a lead core it does not have any lead exposed at the tip.
Full metal jacket bullets are designed not to expand when they strike animals or humans. This type of bullet originated for military use to lesson battle wounds and is required by the Geneva Convention.
Self defense jacketed bullets available to the public and to police departments are made with an exposed lead tip and sometimes an exposed lead hollowpoint tip and designed to expand.
FMJ pistol ammo is available. The requirement for FMJ ammo at matches, especially indoor matches also puts much less lead in the air.
shootem45
05-17-2007, 10:08 PM
Yes, though a full metal jacket bullet may have a lead core it does not have any lead exposed at the tip.
Full metal jacket bullets are designed not to expand when they strike animals or humans. This type of bullet originated for military use to lesson battle wounds and is required by the Geneva Convention.
Self defense jacketed bullets available to the public and to police departments are made with an exposed lead tip and sometimes an exposed lead hollowpoint tip and designed to expand.
FMJ pistol ammo is available. The requirement for FMJ ammo at matches, especially indoor matches also puts much less lead in the air.
Thank you!
unclenick
05-18-2007, 11:34 AM
There is also a higher start pressure for jacketed bullets, which tends to increase sharpness of perceived recoil a bit, so they may be trying to level that playing field, too? More likely, though, it is lead, as Bob said. Using the Hornady RN FMJ ENC bullet is best in that regard. It has a copper cover over the bullet base to further reduce lead by preventing hot propellant gasses from acting on the lead core. That exposure tosses a certain amount of lead and its oxides into the air.
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