The 1-12" twist can be marginal with the 40 grain VMAX. Because of the long boat tail, it's just a little longer than other 39-40 grain bullets and if the twist is just a hair slower than nominal, which happens with manufacturing variation, that bullet might not stabilize.
The fractionally shorter 39 grain Sierra and 40 grain Nosler have not had that problem in my guns.
There's nothing wrong with dropping down to 32s. I haven't shot the Sierra yet but the Hornady and Nosler are very accurate in my gun.
My loads are simple. 27.5 grains of Vargut under any 39-40 grain bullet, 28 grains of H335 under any 32 grain bullet. WW brass, Rem 7-1/2 primers. Ballpark half inch 5 shot 100 yard groups with a 7 pound all-up rifle.
Tom
