Discrepancy in reload data: powder vs bullet

That's where a phone call comes first before shooting over the chrono; if you load the wrong load first, it might not matter what the chrono says........;)
 
That's where a phone call comes first
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That's why you go LOW first.
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....or again, simply refer to a third published source. Over the years I have come across the same scenario as the OP on different occasions. Start loads from one source higher than the max loads from another source. Both considered safe loads in any modern firearm, neither was a printing error or a mistake. In every case, the third source was somewhere in between the extremes and had some overlap.
 
CAUTION: The following post includes loading data beyond or not covered by currently published maximums for this cartridge. USE AT YOUR OWN RISK. Neither the writer, The Firing Line, nor the staff of TFL assume any liability for any damage or injury resulting from use of this information.

In 40sw 200 gr 3N37:

a) Vihtavuori web site: 6 gr. 1.126" , 988 fps

b) top of my work up, all I can fit in my gun: 9 gr 1.158", 42% extra powder.. still a wimpy load, but low flash
 
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