Thread: 260 Improved

Originally Posted by Kiwi Greg

The Amax is well known a fragile target projectile with a thin jacket & plastic tip to increase BC which as a side effect increases expansion.

As projectiles slow down their expansion generally decreases, which is a good thing if they are fragile, this is why the Amax is a NZ favourite for LR hunting, especially the 162.

If the 140 Amax is driven at a more moderate speed, say 6.5x55, it will probably be fine.

When projectiles are launched hard/fast they get "hurt" as they go through the throat, the rougher the throat the more they get damaged to the point where they lose accuracy.

This is accentuated by faster twists, velocity & heat.

A lot of the target bullets have thicker jackets to try to mitigate this which can/does make them less than ideal for hunting, the Lapua Scenars for instance.

Solid copper projectiles, like the Barnes, Etip & GMX don't have this problem, they have other problems instead, like possibly more fouling, although this has been helped with relief grooves in the GMX & Barnes, these also reduce pressure & help with velocity increases, also they need to have a higher impact velocity to maintain acceptable terminal performance.

Fantastic up close but not so much further out at LR.

Generally if you push a projectile faster or slower than it would normally be with the regular calibres it was designed for, there will be "issues".

It is the same old story, there are no free lunches

Perfect answer right there.

Built a light weight stock for the Model 7 to replace the horrible plastic fantastic.

The stock is pretty light at 500 grams with the Limbsaver recoil pad

The rifle as pictured with the VX3 4.5-14 x 40 CDS is 4.96lbs







The wood is quite soft, nowhere near as strong as Carbon Fibre & it will get damaged but such is life, it's there to be used