It's been a while since I shot 1.000 jackets much and I prefer bullets in the 8-9 ogive range, but you do bring up a good point, Al. Part of my reasoning is the shorter neck length of the 30 Major vs a BR. But with n120, I don't have to heavily compress the charge with any bullet that I shoot. My charge is generally a little over half way up the neck with no drop tube and dumping straight from the powder measure. The newer lots appear to be a bit slower than the old n120, though. I recently blended everything I had left of n120. Still need to fine tune it a little but it's shooting well where I'm at with the blend of old and new. I need to chrono it too. I can tell I'm a little slow with it.Mike, with 34.5 of H4198, my 1.00" long 7 ogive bullets give a fair bit of powder compression.....which I don't mind.My drop tube is a 4" Sinclair that has different caliber 'o' ring inserts. With the .17 insert, it gives the same case fill level as an 8" drop tube with a .30 insert.
Compression is enough that with a neck bushing .004 under the neck diameter, the bullets will creep up .003-.004 within about 10-15 minutes of seating. The .925's would be a nice way to end run this.
In general though, it's a .925 world with the BR/Major cases. I just prefer the 1.00 stuff for my junk for a couple reasons.
Good shootin'-Al