Vance,
That's a great group! Especially from what is not considered to be a "target" cartridge.
I haven't seen any listing for IMR 4350 to be used in a .30-30, since it is generally thought to be too slow for the .30-30. However you thought this one up, it looks like it was good thinking!
The Sierra may disappoint you a little at that velocity. I have some 139 Hornady loaded in a 7mm Mag for #1 son travelling at about the speed you are talking about. The doe he shot this year was hit behind the front shoulder at an angle and the bullet and exited in front of the opposite shoulder. The exit wound didn't exhibit much expansion at the lower velocities. However, the doe only travelled about 10 yards after being hit.
The Sierra may be made with a little less thick jacket material, so good expansion may be possible with it. It just doesn't look like the Hornady is built light enough to expand at lower MV.
That being said, he wanted a full box of the reduced loads, so I guess he was happy enough with the results!
I am a "accuracy first proponent" as far as the bullet design, I guess field experience will be the judge and jury.
Here is some data Sierra puts out for the .30-30, ( IMR 4350 is listed)
.308 170 gr. FN 30-30 Winchester
Cartridge OAL: 2.520"
1800 1900 2000 2100 2150
RE-7 22.4 24.0
IMR-3031 25.7 26.9 28.1 29.3 29.8
H322 24.0 25.6 27.2 28.6 29.4
AA-2230 25.7 28.2 30.7 31.9
748 26.1 28.0 29.9 31.7
AA-2460 25.7 28.1 30.5
AA-2495 BR 26.0 27.6 29.2
AA-2520 27.9 29.7 31.6
IMR-4895 27.9 29.2 30.4
IMR-4064 26.4 27.8 29.2
Norma 202 27.0 28.5 30.0 31.5 32.0
Viht N540 27.6 29.2 30.8 32.3 32.9
RE-12 26.5 28.3 30.0
Viht N140 27.0 28.7 30.5 32.3
IMR-4350 31.6 32.9 34.3Energy/ft.lbs. 1223 1362 1510 1664 1745
Accuracy Load: H322/27.2 grs.; 2000 fps/1510 ft.lbs.
Hunting Load: H322/29.4 grs.; 2150 fps/1745 ft.lbs.