The .35 Whelen would be a great round for that lever gun.

The .375 Scovil uses .30/06 brass and the .375Hawke/Scovil uses a 9.3x62 case, I believe. Both pretty much duplicate my somewhat straigthened and shorter necked .375/06IMP which has an 80 gr. capacity using the .30/06 WW cases. Fed. and RP brass runs 78gr.

These rounds, if loaded to the .30/06's 62,000 SAAMI Pezio PSI, do not give up much or anything to a normal chronographed .375H&H factory load. My 300's run 2,474fps and the .270's easily do 2,650fps and with top loads, over 2,700fps using TSX bullets. I backed them off to 2,600fps due to being a mite uneasy over the ballistics I was recording. The 9.3x62 also does well over 2,600fps with 270gr., however there aren't any .366" 270gr. bullets of substancial enough build for those speeds.

So - .35 Whelen would be fun, 9.3x62 even more so.