RandomHero
Custom
Anyone have some real data or life experience comparing the difference between the TMJ and FMJ ammo?
TMJ vs. FMJ
- Thread starter RandomHero
- Start date
HansGruber
Ronin
The only differences are that with TMJ, the base is covered by jacket material where FMJ typically has an exposed lead base. The TMJ is supposed to reduce lead exposure.
Usually, TMJ bullets are plated, as well.
As for how they shoot? YMMV...too many variables to give a blanket statement.
Usually, TMJ bullets are plated, as well.
As for how they shoot? YMMV...too many variables to give a blanket statement.
TEXASforLIFE
SAINT
I have both, but prefer the tmj so base in not exposed. Less lead in the air or off your face when fired! Usually only Speer offers the tmj as far as pistol bullets go. there are more tmj type in rifle bullets.
HansGruber
Ronin
Pretty much any JHP has a covered base...and there are tons of choices in plated bullets for reloading.
Federal's “Champion” line uses plated bullets.
Winchester's “Winclean” line also has a covered base.
TEXASforLIFE
SAINT
Yes most jhp's are covered base, but the fmj type that most aren't!
RandomHero
Custom
Wasn't sure if they performed as well as FMJ. So figured I would ask.
TEXASforLIFE
SAINT
I haven't had any performance with either. I will say the Speer tmj function better in my handguns and with more velocity.
HansGruber
Ronin
I have had issues with .45 (Blazer or Champion...can’t remember which) plated bullets (TMJ) having their jackets stripped by my Baer’s rifling; in doing some close range drills, there was an obvious spray of jacket material embedded in the target.
But, I didn’t notice their accuracy being any better (or worse) than any other factory FMJ at longer ranges...so, again...ymmv. Usually, blazer & champion are some of the cheaper lines of ammo out there, so...pick up a few boxes and see what you think.
TEXASforLIFE
SAINT
I just reload and haven't bought factory ammo in quite some time. Can't speak about factory performance.
TEXASforLIFE
SAINT
What kind of data are you looking for?
RandomHero
Custom
Just basic info as in if it performs like regular FMJ. Is penetration the same, reliability? I have zero experience with TMJ so kind of hoping for some expertise to educate me on this subject.
HansGruber
Ronin
It should be the same as a FMJ of the same profile, weight & velocity.
That being said, sometimes some guns just don’t like some particular loads...
TEXASforLIFE
SAINT
My experience semi auto pistols that I have are not finiky when it comes to brands of bullets(hand load). I just prefer tmj when caliber available.
TEXASforLIFE
SAINT
Speer has a tmj 75gr 22 cal that I'm doing load development on.
M
Minuteman1969
Guest
I'm not a fan of tmj since they first came out, as everything I've seen so far showed me that the plating isn't thick enough and the lands & grooves cut through the plating on several models including Glocks... allowing lead to be deposited in the bore and even goober up close to the crown if you shoot long enough and your barrel gets kinda hot. JHP and FMJ never does that. I almost always shoot outside so I'm not concerned with lead.
TEXASforLIFE
SAINT
As always, shoot what works best for you! I mostly shoot outside and lead is not an issue. I have a g19, g20, g21, g22, g31, g40 and g41 that I seldom use standard fmj and there are a few jhp that have an exposed base. The hp with exposed lead I'm getting away from, only a preference! My 44mag makes it harder on selections!
RandomHero
Custom
I really appreciate all the input guys. I went ahead and bought a few rounds since they were on sale.
HansGruber
Ronin
There you go.
Always best to find out what works for you. If other people have had issues, so what? If it runs in your gun, and you like how it shoots...you’ve found the good stuff.