ghost21 Posted January 19, 2016 Share Posted January 19, 2016 This may be helpful, Looks updated http://www.vihtavuori.com/en/reloading-data/handgun-reloading/-40-s-w.html Link to comment Share on other sites More sharing options...
notfast Posted January 21, 2016 Share Posted January 21, 2016 I checked velocity on three occasions using a load with N340 and it looks like the book may be a little conservative on velocity. VV test data for 6.3GR of N340, 165GR FMJ, OAL of 1.126 in a 5.5" barrel gives 1096FPS. My barrel is a 4.6" LWD. My load is: 165GR BBI (.400) 6.0 N340 CCI 500 OAL of 1.130. Averages of 8-10 shots were 1044, 1029, and 1066. SD for all three samples were in the mid-teens. Link to comment Share on other sites More sharing options...
perttime Posted January 21, 2016 Share Posted January 21, 2016 Different gun/barrel, different bullet, probably different primer and case. I haven't seen information about the ambient temperature they have during testing or how far from muzzle they take the measurement. Everything makes a difference. I'm sure their velocities are actual numbers from tests. Link to comment Share on other sites More sharing options...
ghost21 Posted January 22, 2016 Author Share Posted January 22, 2016 Just thought I would put up the link ,Incase anyone was interested! Link to comment Share on other sites More sharing options...
peterthefish Posted January 22, 2016 Share Posted January 22, 2016 Appreciated. Link to comment Share on other sites More sharing options...
perttime Posted January 22, 2016 Share Posted January 22, 2016 Vihtavuori powders are the most accessible ones for me, so they are all I've ever used. Their data is the go-to reference when I want to load anything. Usually, I check a paper copy, or the latest PDF file of their Reloading Guide. They might not list my exact components, but I've always found at least a reasonable starting point. Link to comment Share on other sites More sharing options...
dhollis51 Posted February 2, 2016 Share Posted February 2, 2016 this is where I started with N320 Link to comment Share on other sites More sharing options...
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