FMJ is the traditional metal jacket with a lead core. The (gilding metal:
95% copper, 5% zinc) jacket is a separate part and the core is swaged in.
Hornady makes a variation with another base part attached to cover the
exposed lead base. Either of these is required in CMP matches. Nosler's
185 grain HP or Remington's SWC also fit the FMJ description and are used
extensively in conventional pistol bullseye.

Most of the other CMJ, TMJ etc. bullets are plated lead bullets. They offer
no accuracy improvement over lead bullets, but they cost like real FMJ
bullets.

Personally, I use cast lead for bullseye, as do most people. Fairly soft,
harder alloys are for higher velocities, and well lubed. Rooster jacket
works nicely.

HTH,
Norm

> -----Original Message-----
> From: BULLSEYESHOOTERS@yahoogroups.com
> [mailto:BULLSEYESHOOTERS@yahoogroups.com] On Behalf Of speedy94301
> Sent: Thursday, April 24, 2008 11:44 PM
> To: BULLSEYESHOOTERS@yahoogroups.com
> Subject: [BULLSEYESHOOTERS] FMJ & CMJ
>
> Was wondering what the difference is between FMJ (full metal jacket)
> and CMJ (complete metal jacket) bullets?
> Is one better than the other? Do both have copper jacket fully
> covering the bullet base?
> I need to know which is best to use for bullseye. thanks
>
>