Swift .338 Scirocco II 210 grn

[wildcatter]

For the first time in a long time the 210 grain Scirocco II bullets are available again. I just received mine. This is a brand new run that has not been run in over 5 years, if you want this these premium hunting bullets get em while you can, they had long list of those on their waiting list!

 

[Edd]

What is the length of the bearing surface on those bullets?

 

[wildcatter]

What is the length of the bearing surface on those bullets?

Approx .670" from where the bullet contacts the lands front at the ogive to the where the boatal end contacts them. The OAL of the bullet is 1.393". It is almost the same OAL as the Nosler 225 AB.

A 2748 fps load with Varget, shooting into a 18" long 12" dia. Elm log gave full 18" down the center penetration @ 100 yards and stopped off a tire behind it, giving me a satisfying sample of it's toughness! 90% wt retention at 189 grains, with a .673" expanded diameter of the perfect mushroom. Very tough bullet, and will be my heavy load for anything bigger than sheep and deer.


If you look close you can see the contact ring where the ogive contacted my muzzle, and to close to the beginning of the boattail to see that.

I just got back home from testing 62.5 grains of H4350 for pressure, I can go a little more as I have not got over .0025" expansion at the base. But with the 21 1/4" barrel, I doubt any gains will be significant in another half or full grain. This load clocked 2802 fps. Which is pretty good for what I was hoping for.

I also shot one each of 53.5, 54.0 and 54.5 grains of Varget. They were slower and as with the H4350 load showed about the same head expansion, around .0025" with the 54.5 grain load. But with 2748 as it's top velocity with the 54.5 grain load. I've decided to work with H4350 in the short carbine length barrel to start with.

But at 2800 fps, the bullet is still running over 2000 fps with 1887ft lb energy. This is the ballistics chart for this load, and I can live with it if anywhere near 1/2 moa accuracy is what it gives.

I'm reshooting a 3 shot group with 180 grain AB's that gave me under .3 moa and 2999 fps AV with 59.0 grains of Varget last week. It sure would be nice to see this 210 grain bullet equal that accuracy. my load development will be done. That is on my next range trip agenda, testing this bullet with 62.5 63.0 and 63.5 grains, if pressure stays in check, and confirming the 180 grain AB load. 1/2moa with both is my goal, but a repeat would be gladly accepted!


Both loads are easy on the shoulder with the Blacktooth stock!

 

[Edd]

Where are you measuring this .0025" expansion?

 

[Edd]

I had 3 boxes of these on order. They were on a USPS tour but I finally got them today.