The 500 series is double base powder while the 100 series is single base. The 500 series burns with a hotter flame. Id recommend using 100 series where accuracy is most important rather than speed. 500 series where more speed is wanted. All are accurate, i use vv powder exclusively.The 5 series are slower (burning rate) than the 1 series. I've been playing with 160-560, 165-565 in a 243 most of this past summer. The "barrel heat" for just 5 rounds is quite different (much warmer) with the 5 series vs 1 series, That being said you use a couple grains more powder with the 5 series than the 1. Not much change in accuracy between the 2, meaning preferred loads were almost identical (group wise) between the 1 and 5 series group wise. My rifle prefers loads at the high end with both 1 or 5 series (31" 8 twist).
You can find this info on the VV WEBSITE here:I going to test some different powders in the N-560 to 570 burning rate range. Does anyone have any first hand experience with 565 or 568 as compared to N160, 165 or 170?
I can tell you the 568 is alot cooler burning than 570I going to test some different powders in the N-560 to 570 burning rate range. Does anyone have any first hand experience with 565 or 568 as compared to N160, 165 or 170?
What bullet and barrel specs are you shooting with n165? Have you any velocity to report?The one thing that I definitely don't need is more heat. I'm testing in one of my .22 Creedmoors so there's no a lot of room for excessive from the standpoint of barrel life. I'll be testing N-165 and see what load density and velocity that yields.
I’d be interested in your n165 findings once you do start testingBoth of my .22 Cm rifles have Kreiger 4 groove 8 twist barrels at 21 inches and suppressed. I haven’t tried any N-165 yet but I have shot N160 and Rl 26. With the 69 grain Lapua Scenar they will tune in the 3480 or 3520 depending on the powder. Rl 26 being the faster of the two.
Might want to look at N-160 for, the .22 Creedmoor ( close to 4350 Burn ) I use it in 6 XC and 6.5 Creed and it,.. "Shoots Well"The one thing that I definitely don't need is more heat. I'm testing in one of my .22 Creedmoors so there's no a lot of room for excessive from the standpoint of barrel life. I'll be testing N-165 and see what load density and velocity that yields.