.40AET Posted January 25, 2004 Share Posted January 25, 2004 I am currently using MG 180g Full Metal Jacket .40 bullets. I am thinking of switching to 180g Total Copper Jacket bullets. Is there a good reason to use one type over the other. Does one type have better accuracy than the other? I am happy with the FMJ, but if there is anything to be gained, then I would switch. Thanks for any advice, Kirk Link to comment Share on other sites More sharing options...
kimel Posted January 25, 2004 Share Posted January 25, 2004 The only reason is probably that there isn't the exposed lead base like you find with the FMJs. If you are shooting indoors this might make a difference. Accuracy in a typical pistol at the ranges we typically are shooting at probably isn't going to be different enough to notice unless you are shooting bullseye. I haven't ever done a side-by-side comparison though. FWIW...I have gone through about 5K of the 180 CMJs and really like them. Can't say they are any more or less accurate than the Zero 180 FMJs I was shooting before I switched. Link to comment Share on other sites More sharing options...
Guest Larry Cazes Posted January 25, 2004 Share Posted January 25, 2004 As already stated....The upside to TCJ is that there is no exposed lead at the base of the bullet. The lead at the base of FMJ or lead bullet when fired does vaporize and can cause health issues if you shoot indoors a bit. For a lot of us this is a major issue. Link to comment Share on other sites More sharing options...
TheOtherErik Posted January 25, 2004 Share Posted January 25, 2004 another positive for the CMJ in open guns is that it will keep the lead buildup out of your comp. Link to comment Share on other sites More sharing options...
wide45 Posted January 25, 2004 Share Posted January 25, 2004 Total Copper Jacket sounds like plated. Plated is often, but not always inferior to normal jacketed. You will have to see how they work for you. Link to comment Share on other sites More sharing options...
kimel Posted January 25, 2004 Share Posted January 25, 2004 The MGs are not plated. They swage a copper disk onto the base and form the usual gold jacket around it. The term MG uses is "Complete Metal Jacket = CMJ". Link to comment Share on other sites More sharing options...
.40AET Posted January 25, 2004 Author Share Posted January 25, 2004 Safety is one issue. I have 2 small children and keeping lead exposure to a minimum is a priority. I had read in an unrelated post that the FMJ's usually need an extra .1 or .2 to get the same velocity as a TMJ because of the lead bottom. Most TCJ bullets that I have looked at are plated, quality is an issue. If the MG version is jacketed with a copper bottom, then that sounds like the ticket. Link to comment Share on other sites More sharing options...
bernmart Posted January 25, 2004 Share Posted January 25, 2004 Where are these bullets to be found on the Net? Google search inconclusive. Link to comment Share on other sites More sharing options...
.40AET Posted January 25, 2004 Author Share Posted January 25, 2004 Site: http://www.ammodirect.com/productdirectory...ctdirectory.htm The FMJ's are from Montana Gold. I am not sure who make the TCJ. Link to comment Share on other sites More sharing options...
TBF Posted January 25, 2004 Share Posted January 25, 2004 Another vote for anything but the open based FMJ stuff. Lead exposure is one reason. And though I have not done side by side comparisons in pistols, rifles show that most FMJ's are inferior from an accuracy standpoint, when compared to enclosed base bullets. Travis F. Link to comment Share on other sites More sharing options...
kimel Posted January 26, 2004 Share Posted January 26, 2004 Montana Gold Website Link to comment Share on other sites More sharing options...
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