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9/22/2017 12:11:25 AM
Posted: 10/2/2005 3:10:40 PM EDT
I'm ordering some .45 ammo from ammoman.com. What is the difference between the two?
Speer lawman makes both
Link Posted: 10/2/2005 3:12:01 PM EDT
FMJ is a copper cup. It has exposed lead on the bottom. TMJ is usually copper plated lead, having copper on all surfaces.
Link Posted: 10/2/2005 3:12:53 PM EDT
ahh so the tmj would be the better plinker round
Link Posted: 10/2/2005 3:14:20 PM EDT

Originally Posted By oubeta:
ahh so the tmj would be the better plinker round



The better plinker round would be the cheaper of the two
Link Posted: 10/2/2005 3:15:38 PM EDT
THey are about the same price
www.ammoman.com/index.htm
Link Posted: 10/2/2005 3:15:55 PM EDT

Originally Posted By adair_usmc:

Originally Posted By oubeta:
ahh so the tmj would be the better plinker round



The better plinker round would be the cheaper of the two



Indeed
Link Posted: 10/2/2005 3:19:07 PM EDT
I think TMJ is supposed to reduce lead exposure at indoor ranges.

I may be all jacked up on that info, though.
Link Posted: 10/2/2005 3:19:19 PM EDT
[Last Edit: 10/2/2005 3:28:03 PM EDT by adair_usmc]
Too bad you didnt live close to Oregon, I could get you 500 rounds of UMC FMJ ammo for $79
Link Posted: 10/2/2005 3:25:42 PM EDT
[Last Edit: 10/2/2005 3:26:12 PM EDT by The_Gooch]
TMJ is cleaner to shoot as it has no exposed lead to be vaporized by gasses and deposited in the barrel. It also reduced the amount of lead exposure to the shooter at indoor ranges.

Since a TMJ is basically a common lead bullet with thin copper plating, it can be as bad as regular lead bullets in a Glock barrel= KB. I won't shoot plated bullets out of my factory glock barrel.

FMJ has a much thicker copper layer, as it is a jacket of copper that has had a slug of lead swaged into it.
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