Buy some more shells for the 35?
I bet those are still available.
This.
What you got is pretty darn good. I'd slap a set of XS ghost ring sights on it and merrily slay every piggie I came across.
Of course, if you are just looking to buy another gun then there are lots of good options. "Hog guns" are my favorite type of rifles: short, handy and with a punch!
Ruger Guide or Alaskan - .375 Ruger
Marlin 1895 SBL - .45/70
Ruger Gunsite Scout - .308 Win (wish it were a .338)
Remington 673 - .350 Rem Mag
Remington 7600 - .35 Whelen
Winchester 1886 - .45/70
CZ 550 - 9.3x62 or .375 H&H
Ruger Hawkeye Compact Magnum - .338 RCM
A lot of people don't like single shots, but I am a fan. I'll throw in these as well:
Winchester 1885 - .405 WCF, .45/70, .375 H&H
Ruger No. 1 - 9.3x74R, .405 WCF, .450-400 NE", .375 Ruger, .375 H&H, .416 Remington