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Old May 7, 2006, 11:04 AM   #1
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loading 9mm with win. 38 JHP ??

I'm thinking about loading some 9mm luger with Wincheaster 125 gr.- .38 JHP. I know there's a .002 difference in dia. Has anyone tried this??
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Old May 7, 2006, 11:31 AM   #2
Jim Watson
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It can be done. Many 9mm P barrels are oversize anyhow.
The key is whether a loaded round will chamber freely. If the cartridge is tight in the chamber and the brass cannot expand to release the bullet, it will cause more pressure rise than the slightly larger bullet going down the barrel.

Load one and see if it drops in the chamber and rattles around like a factory load. If it does, then do a few and see if the nose shape lets it feed.
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Old May 7, 2006, 11:43 AM   #3
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It is hard to do in some dies as they are too tight.

Some guns won't feed a revolver bullet.
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Old May 7, 2006, 11:50 AM   #4
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Yeah. Bullet will size down .002 without any problem although I would not start off with a top load. It's not likely to to have to size down, though. Current 9mm mostly have .357 groove diameters, or mighty close to it.

I've shot 125 grain .357 jacketed in several 9mm and use .358 cast.
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Old May 10, 2006, 05:08 PM   #5
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Loaded thousands of Star 125grJHP in both 9MM and 38 Super. Never a problem.
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Old May 23, 2006, 02:23 AM   #6
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Wow this is the first time I ever heard that!!
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Old May 27, 2006, 11:50 PM   #7
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Why would you do this, unless you have the bullets on hand, the cost for 9's sized properly at .355 is almost always less than it is for jacketed .358 bullets. 9mm are loaded usually to fairly high pressures and dropping an oversized bullet into the mix is a good way to push pressures up where you do not want them. This has a good chance of shortening brass life, adding to the beating of the pistol, and perhaps suffering a KB. I just do not see the purpose.
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Old May 28, 2006, 07:40 AM   #8
Johnny Guest
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Change of forum

Sorry I didn't see this thread earlier. It really belongs in Handloding & Reloading, and you stand a chance of getting wider input here anyhow.

While you CAN get away with using lighter .38 spl bullets for loading 9mm, the concerns about risk of excessive pressures are indeed valid. If you have a .38 spl or .357, you might as well save these bullets for use in one of those. If you don't, you would probably be better off swapping them for some 9mm bullets.

I'd offer to do a trade with you if we were close neighbors. Shipping charges would be prohibitive, though.

Best of luck
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