My new 7 mm Mag Ruger is finally settling down and grouping well, but I still get a wild flyer every 3 or 4 shots with the Swift Scirocco. This does not happen with the North Fork or Core-Lokt bullets I have fired.

I noticed the "4th Shot Flyer" topic but I don't think its due to barrel heating causing uneven pressure since it can happen with a relatively cool barrel on the 2nd shot. It could be uneven pressure but why not with the others?

Anyone have a similar experience? I think I recall somebody complaining of this awhile back.

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Originally posted by Harald:
My new 7 mm Mag Ruger is finally settling down and grouping well, but I still get a wild flyer every 3 or 4 shots with the Swift Scirocco. This does not happen with the North Fork or Core-Lokt bullets I have fired.

I noticed the "4th Shot Flyer" topic but I don't think its due to barrel heating causing uneven pressure since it can happen with a relatively cool barrel on the 2nd shot. It could be uneven pressure but why not with the others?

Anyone have a similar experience? I think I recall somebody complaining of this awhile back.

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I have had nothing but great success with these 180 grain sciroccos in my .30-.378
weatherby. I really like the accuracy of these bullets. Cooper remover the barrel
and seat the bullets out as long as you can with ok pressure.

I too, am having less than good luck getting the 150 Swift Scirroco bullets to shoot well.

I have tried them in a Remington 700 Classic chambered for 7mm Weatherby magnum and in a custom built 7mm Remington magnum.

Both guns act like they want to shoot, then send a flyer or two off into never never land.

I thought I had a good load developed for the 7mm Weatherby after shooting a couple of sub minute of angle groups. Then I went out to see if I could repeat the performance and could not get anything under 2.5 inches! The same day that rifle would put 160 grain Partitions into 3/4 inch repeatedly.

My buddy has a custom built 7mmSTW that shoots the Swifts real well, but only if he seats them into the lands.

We went on a wild hog hunt the other day and his load just dropped a big old boar like it was struck by lightning.

I think that is a great bullet if you can just get it to shoot well enough to hit anything with it.

Good Luck, I think I will have to stick with Noslers for now.

R F

Harald,

The Swift Scirocco bullet uses a secant ogive, not the tangent ogive that you would find on the Core-Lokts or the North Fork bullets. A secant ogive bullet is far more sensitive in its proximity to the lands. For consistent accuracy, you should seat the bullet almost touching the lands.

Also, most bullet makers have varying Length-to-Ogive distances on their bullets. Get yourself a Davidson ogive tool from Sinclair International and use Length-to-Ogive for bullet seating, not overall length.

Good Hunting !

I have the bullets seated out as far as the magazine will allow. I don't consider single feeding to be an option worth considering, so if thats what it takes to get them to shoot well, I'll use something else.

I should have indicated that the bore was well scrubbed using a copper solvent. In general they group reasonably well but then one will land five to eight inches away for no apparent reason.

Barring scope or bedding problems, I have a $ that says a Lee crimp die will fix the problem. If the bullet is farther away from the lands, differences in neck tension (bullet grip, or whatever you want to call it) can show up this way. HTH, Dutch.