Mark,
Bond shopping isn’t a matter of “skill”. It’s a matter of applying to bonds the same common sense and grammar school arithmetic that one uses to shop for bell peppers or baskets of strawberries. “Are they cheap right now, or expensive? If cheap, buy more. If expensive, buy less or none.” Right now, long-dated bonds aren’t cheap. (If they were, the yield-curve wouldn’t be inverted.) Nor do any of them offer a real rate of return after taxes and inflation, not when even the lie that is the CPI is saying that inflation is north of 6%.
So, let’s do some math. If you buy a bond with a 2.5% coupon at a 33% discount to par, your current yield (CY) is 3.75%, right? But that $25 coupon is taxed at ordinary income rates, which drops its effective CY to 2.81%. Meanwhile, your personally-experienced rate of inflation --at the grocery store and gas pump-- is running at least 3x that. Opps. You’re losing money (aka, purchasing power) instead of gaining it. Not smart.
YTM (Yield to Maturity) is made up from two components: the coupon payment and the diff between par and the price paid. If a bond is bought at a discount to par, then cap gains is achieved. So buy the bond at 66 and get 100 at par. That’s an attractive 52% gain. But that gain has to be prorated over one’s holding period, which --in the case of that Farm Bank bond-- would be roughly 17 years, or a cap gain of 3% year for accepting a lot of risk, the chief of which is this. In 17 years, when your principal is returned to you, by how much will the $US dollar have depreciated? Let’s assume that Powell does succeed in his quest to get inflation back down to 2%. Do the math. 17 years from now, when your principal is returned, you will receive $1000 per bond whose purchasing power has been degraded to $714.16. If that isn’t trading elephants for rabbits, then give me another name for it.
Aside: Here’s one way to estimate the decline in purchasing power over any holding period, given a guess about the inflation rate. Add ‘1’ to your estimate of an average inflation rate over your holding period and convert it back to a decimal number. (E.g., 1 + 2% = 1.02) Raise that number to a power equal to your holding period. (Thus, 1.02^17). Use a scientific calculator to do the calculation, whose answer is 1.400241419. Take the reciprocal of that. (1/1.40) The answer is 0.714162562. Multiply that number times the nominal money received at maturity. The result is the purchasing power returned to you.
OTOH, if you’re a “show me” sort of guy, it is easy to use a spreadsheet to show each year how your purchasing power would decline for any inflation rate over any holding period. The results offered by each method differ slightly, but not materially, and the math is faster.
Here’s my take on them who want to get into the bond market at this last stage of the game. DON’T. You’re going to lose money, a lot of it, because the game has gotten so tough. Yeah, for sure, stocks --for the most part-- are still so overpriced as to be unattractive, never mind that declines of (-30%) or more are ahead of us. But the situation in the bond market is far worse due to present uncertainties about almost everything. (IMHO, 'natch.)
PS. SLM issued stepped-coupon bonds, not inflation-adjusted bonds. Only our dear gov’t issues the latter, which you should be buying instead of Farm Bank bonds. (Again, IMHO.)
PPS. I don’t know which bond “expert” you were getting advice from on CNBC. But my bet they were of the same caliber as Jim Cramer --whom I like a lot-- but whose calls are often enough so awful that he’s a tell on What Not To Do. Instead, turn off the TV and start reading at Lew Rockwell and Zero Hedge, plus listen to Jim Rickards and Danielle DiMaritino Boothe.
Meanwhile get hold of Sharon Saltsgiver Wright’s intro to bonds (any edition) and work your way through it, pencil in hand, calculator at your side, then head on over to E*Trade whose bond search engine is the best on the web, but execute through IB or Fido, who have the best commish schedules, although Schwab is excellent for Treasuries bought in the secondary market.