Thanks for all the replies.

Yeah, the 200gn Nosler Partitions are on my "to load" list.

Dasmafia: That seems to be the consensus from what I've read about the 300 H&H (e.g., Gregor Woods). The 150gn-180gn bullets can basically be handled as well in modern loads by the 30.06. Where the 300 mag shines is in launching the 200/220gn slugs at greater velocities & distances.

DPhillips: I haven't tried IMR 4350. Actually, I was reviewing the load data for H-4831 and the Nosler 200gn Partition. I may take you up on the e-mail info, thanks.

JoeR: I've never shot Woodleigh bullets in .30 cal, but the experience you relate doesn't sound very inspiring. I have shot the .303 Woodleigh 215gn RN bullet in my Lee-Enfield and found it was pretty accurate for that type of bullet. (Still waiting for a chance to hunt with it).

A 200gn Partition @ 2850fps sounds about right. With the 220gn bullets, I'd like to develop a load in the 2680fps range.

My 300 H&H is a Ruger #1 with a 26" barrel, which is 2" longer than you usually see these days in 300 H&H. What's nice is that, being a single-shot, it's still more compact overall, and somewhat lighter, than a 300 mag bolt gun.