I have found that the standard 1 in 12" twist is ideal for 270 and 300 gr. bullets in the 375 H&H. A high-quality custom barrel, such as the Lothar Walther, should shoot just about everything well. My own custom 375 H&H has a Kreiger 1 in 12, and it shoots premium 270 and 300 gr. bullets all to the same POI up to 200 yds. I've seen this trait before with various quality 375 H&H rifles, such as the original pre-64 Model 70.

Other than that, I'd try to closely match Winchester's barrel contour at a 24" finish length, as I consider it just about ideal for a 375 H&H.

I'd also carefully select good open sights (I have EAWs on mine) as well as quality detachable mounts with bases that are custom-built to match the dimensions of your receiver exactly.

AD