i know you asked about a 338 caliber, so it's not exactly apples to apples. but i bought a YHM 30 caliber, it suppresses well, makes my 308 sound like a loud 22, if you will.
on the other hand, once you get it, you will always have in the back of your mind, "what if".
now, i do not have my TBAC yet, just sent the papers in a month ago, so i cannot give my first hand experience yet, maybe in a year i can.
so, now i have $600+$200 for the YHM = $800.
and $1000+$200 for the TBAC = $1200
YHM + TBAC = $2000 and about 2ish years.
as far as accuracy for the YHM, when i received my form 4, my back was jacked up like 10 mother fuckers. so between a fucked up back, back surgery a few months later, and owning a business, i have not had the time to actually run the YHM for an accuracy test. just a suppression test.
from a lot of the reviews, videos, and reports i have read over that last year, the YHM and the TBAC suppress/sound/tone is about the same. but the POI shift, repeatably, accuracy, weight, the TBAC takes the cake. i will let you know in a year when i get my TBAC so i can compare side by side if this is true.
so my advice, call around in your state to see who has one in stock, buy the TBAC on a credit card even though the TBAC is out of your price range. shit...you have a LONG time to pay the credit card off, sit back and wait.
after all, the TBAC has the reputation, and this is why you asked a question. had i had to do it all over again, i would have done a TBAC transfer on a form 3 and waited for what i really wanted but didn't want to spend the money or wait. but guess what, and you only get three chances to guess correctly, and the first two guesses don't count...i am still waiting........