Reloading the .243 WSSM

[TooTallRosenwald]

Does anybody have a load for this caliber shooting the 115 grain Berger? I have a Winchester Model 70 Stealth with a Burris Black Diamond on it. It likes the factory 95 grains good, but I want to extend the range a little.

 

[Laurie]

The 115 won't stabilise in the Winchester 70 Stealth if it still has the factory barrel on it - the twist rate is one turn in 10", and you need at least 8" for this bullet, preferably 7.5" or faster.

For loads data, the WSSM has identical case capacity to the common or garden .243 Winchester, but gets the extra performance by running at an extra 3,000 psi max chamber pressure. There will be few if any people around who've loaded the 115 in the WSSM, but you should get some advice from fast-twist barrel .243 users.

Laurie