Most of the Woodleigh bullets have a recomended MV,but some have got to push them faster than they were designed for and as a result it expands to quickly.
That is NOT the bullets fault.

I use the 300 gn RN softs and solids in my rifle using exactly the same load and they shoot within an inch of each other.
The difference I put down to shooter error.

So Pigeon,give them a try and you might be pleasantly surprised.

Al