Vihtavouri 160 vs. 560

C

chucksniper

Guest
I read that 560 is especially for the .270 winchester,
but 160 is used for the factory loads for the 270. I've shot some really good factory stuff, such as Federal
power shok, and Winchester supreme ballistic silver tip
that shoots fenominal at 100 to 300 yards.
 
From http://www.lapua.com:

"The N100 series powders are single base powders used mainly in rifle calibers. There are ten N100 series powders with different burning rates and suitability from the .17 Remington up to the .458 Winchester Magnum and two special powders for .50 BMG.

The N500 series powders are impregnated extruded rifle powders with Nitroglycerol added as extra energy component. If higher loading densities and more energy are needed, N500 series powders are competent alternatives for the N100 series powders. N500 series High Energy powders are available in five different burning rates."

Arguably the "best" powder and load changes with the cartridge, bullet, barrel, range, atmosphere, and desired terminal performance. There is good reason there are hundreds of brands and models of powders available.
 
My experience is the 500 series VV powders work better at higher pressure. And they seem to produce more barrel heat that the 100 Series.
 
I load 540, 550 and 560 in various rounds. If you look, you will find the 160 and 560 are side by side on a burn rate chart. The difference is that you usually can load more of the 500 series giving you better load density. I also find better speeds from the 500 series.

Study this and see if it makes sense and helps.....

_270Winchester.jpg
 
VV High energy powder

Chuck -

Howdy !

Kaltron-Pettibone told me that while the VV 500-series powders have basically the same burn rate as their matching 100-seires cousins; they work best w/ heavier/heaviest bullets in each calibre used.

For example: In a .220 Swift, VV160 would work fine w/ 55gr bullets & 1-14.
To use VV560 to best advantage ( in a .220 Swift ), one should go with something like 75gr or heavier bullets; and a 1-8 or even 1-7.5 twist.

You get the idea.

With regards,
357Mag
 
tempterature

I have to agree with Louis... Higher powder densities, with the 560.

Which would work well at longer range. But you can't totally depend on the powder to provide complete tempterature sensitivity.
 
VV160 vs N550

My experience has been with the .308 and 210 grain bullets.

I shot about 4000 rounds in a 30-32" 1:10 barrel.

VV160 is very simular to IMR4350 or H4350.

N550 gives about 200 fps more velocity.

The three reason I stopped shooting VV550.

1.It was hard to get.

2. It was expensive.

3. It was temperature sensitive and presure issues and verticle were an issue on hot days.

I could get better results from H4831 for my applications.

Nat Lambeth
 
I like R22 for 270 Win and 130gr bullets. Used Hornady SST and Nosler BT's.

Get about 3100fps with it.

Reloder powders are very clean burning.
 
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