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Old 06-14-2009, 01:08 AM   #1
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ammo nomenclature

What are the differences, if any, between " jacketed truncated cone" and " semi-wadcutters" as the terms relate to .45 ACP ammo? Are these terms interchangeable?



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Old 06-14-2009, 06:44 AM   #2
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ammo nomenclature

No, the term are not interchangeable. The JTC design is a simply a flat tipped version of ball or round nosed generally available in 230 grains. I think both Hornady and Sierra used to make the design but I have not seen them in some time. I remember them in FMJ but I also think they have them in lead as well. From memory, I think this was an outgrowth of a USAF effort to improve the ballistic effects of the 9mm prior to the adoption of the M9 pistol. Norma used to load a 230 JTC at the behest of Jeff Cooper.



The only semiwadcutter design I have seen in 45 ACP is a 185 or 200 grain sharp shouldered design used for conventional pistol or target competition. They are still available and come in either FMJ or lead. They look sort of like a nipple and have a pronounced right angle to cut paper targets.



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Old 06-14-2009, 07:52 AM   #3
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ammo nomenclature

Hello.





Sometimes a picture can be useful. On the far left is a handloaded, cast 200-gr. SWC. In the middle is a 230-gr. jacketed truncated cone, also a handloaded round.



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Old 06-14-2009, 10:53 AM   #4
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ammo nomenclature

Mr. C, what is that round on the far right?
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Old 06-14-2009, 02:27 PM   #5
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ammo nomenclature

Hello. It is a handloaded early style 230-gr. Speer Gold Dot Hollow Point.



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