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Old August 17, 2001, 09:25 AM   #1
Join Date: February 6, 2001
Location: Illinois
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10 mm Speer and VV load manuals

There is some severely conflicting data between the V-V load book and Speer's. Speer's MINIMUM load is above V-V's max load for 180 gr. and the same powder. What da...???

Is it safe to venture into the Speer loads? I'm shooting both a Glock 29 and a S&W 1076.

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Old August 17, 2001, 11:26 AM   #2
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Take it a step further and buy another manual to see what it says.

Visit a couple sites like Load Your Own

And/or, go with the book with the lastest copyright.

To be safer, I'd just go with VV. In my experience, Speer is always a little higher than anyone else. I suspect they do not test with any pistols at all.
That's why I prefer books with not only loads, but opinions on certain loads in different guns, from experiences they've had.
Right turn, Clyde.
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Old August 17, 2001, 06:26 PM   #3
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You can never be too safe. I would check some other sources and compare the results. Myself, I have run into just the opposite problem with N340 in 45 ACP the VV load is quite a bit higher than the speer manual. I think the best thing is to work toward any max charge with caution and keep accurate records.
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Old August 18, 2001, 06:02 AM   #4
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Speer tests with guns.

Different components, test environment, etc.
The manuals are only GUIDES, so use some common sense.

And get a chronograph so you know what's actually happening.

Just my (safety first) thoughts.......
"all my ammo is mostly retired factory ammo"
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Old August 19, 2001, 07:21 PM   #5
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And Richard Lee's manual is different from my Lyman manual for 10mm loads. You can find all kinds of differences amongst the various manuals. Like Weshoot2 posted, get a chrony and be careful.
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