N568 Any experience with it?

[nksmfamjp]

I purchased an eight pound jug of this a month ago when there was a big drop. Not much load data out there and I want to use it in my 300 Win Mag.

What bullet and oal?

 

[Wrenches]

What bullet and oal?

180 Partition 3.340

 

[Grumpy old man]

I purchased an eight pound jug of this a month ago when there was a big drop. Not much load data out there and I want to use it in my 300 Win Mag.

 

[Grumpy old man]

I havent had time to fully experiment w it, but it does have less energy content than N570 and N565. Those will likely give you a little higher velocities for the same pressures. To me, the big advantage is possibly its more accurate metering it, and I have anecdotally heard that it seems to give perhaps a bit more accuracy or
consistency in grouping maybe for that reason.

It is closer to N570 than to burn rate of N565.

Believe it or not I used it in my 6mm cm with 28" McGowan heavy barrel 115 David Tubbs 2.800 col and laddered from 37.5 to 41.0 located two nodes one at 38.8 and the other at 40.7 grs will show 2 ladder tests

 

[Veteran]

Depends what weight bullets you want to shoot in .300 WM.

It will work fine for heavier bullets in .300 WM.

Slower than retumbo. Not as slow as N570. Very close to 8133.

 

[ARlife4me]

570, 568 and 565 are for the heavy per cartridge in most LA mags. 570 and 568 can produce close same velocities with different fill rates. In so cases 568 will produce more velocity than 570. As far as fill 568 is more like 7977 and 8133 (not burn rate) and seems better suited for rum and wby cartridges along with nosler. Looking at VV site the 568 and 570 doesn't make sense for use? While I do have 16# of 568 (bought on sale on a whim) to test in 300wm, 338lm, 264wm and 243win. 568 will take more case fill to be at same pressure of 570. Step down to 565 or up to 570. I might try some in 6.5prc?

 

[Grumpy old man]

570, 568 and 565 are for the heavy per cartridge in most LA mags. 570 and 568 can produce close same velocities with different fill rates. In so cases 568 will produce more velocity than 570. As far as fill 568 is more like 7977 and 8133 (not burn rate) and seems better suited for rum and wby cartridges along with nosler. Looking at VV site the 568 and 570 doesn't make sense for use? While I do have 16# of 568 (bought on sale on a whim) to test in 300wm, 338lm, 264wm and 243win. 568 will take more case fill to be at same pressure of 570. Step down to 565 or up to 570. I might try some in 6.5prc?

Depending on the round more case fill my be advantageous,I use a 28" heavy barrel with 5 r and a 200 or 220 gr 30 06 rd and 600 yd shots shoots like a engine block through a pre 64 Harry Pope barrel !

 

[ARlife4me]

Depending on the round more case fill my be advantageous,I use a 28" heavy barrel with 5 r and a 200 or 220 gr 30 06 rd and 600 yd shots shoots like a engine block through a pre 64 Harry Pope barrel !

I in no means say more case fill is a bad thing as most fill rates I load are compressed and some very close you 100%.

 

[Grumpy old man]

Believe it or not I used it in my 6mm cm with 28" McGowan heavy barrel 115 David Tubbs 2.800 col and laddered from 37.5 to 41.0 located two nodes one at 38.8 and the other at 40.7 grs will show 2 ladder tests

Although I did two ladder test they didn't encompass an inch which tells me it's tight grouping