OzFclass

This is the end result of too much twist and too much speed.

7mm Jacko with 80gn of BMG powder....

https://youtu.be/H2PbpvIyqv4

Watch in High Definition.

I have some 183 sierras for sale or swap

what you really need are these solids:
http://brtshooterssupply.com.au/product ... 50qty.html

Walker Flatline will be OK if you are not shooting under ICFRA rules

ICFRA rule F2.20.
Ammunition may be commercial or handloaded but loaded in a manner consistent with the ammunition industry’s accepted standards; must be safe to fire in the rifle for which it is intended and must meet in all respects the limitations of any range regulations (e.g. calibre, velocity, muzzle energy etc.). Even if permitted thereunder, prohibited bullets will be those having a core consisting of steel, hardened material, depleted uranium, incendiary or tracer compounds. Also prohibited are bullets of monolithic construction or those having a discarding jacket/sabot.

Audax wrote:Walker Flatline will be OK if you are not shooting under ICFRA rules

ICFRA rule F2.20.
Ammunition may be commercial or handloaded but loaded in a manner consistent with the ammunition industry’s accepted standards; must be safe to fire in the rifle for which it is intended and must meet in all respects the limitations of any range regulations (e.g. calibre, velocity, muzzle energy etc.). Even if permitted thereunder, prohibited bullets will be those having a core consisting of steel, hardened material, depleted uranium, incendiary or tracer compounds. Also prohibited are bullets of monolithic construction or those having a discarding jacket/sabot.

Yes, not allowed in F class, but how about Fly shoots or long range benchrest?

I was thinking that Stuart would not sell them unless they could be used in benchrest shooting, which is of course the purpose of mike's rifle...

What twist are you running singo? And at what velocity ?

It is a 8.5 twist....175 sierra at 3270fps.