For me, T7M is expensive, even though when bought by the case its cheaper than individual boxes. I save up to $15 per box buying them by the case. I also use more than others, so yup, its more expensive.
On the other hand, I can also get some pretty darn good groups at extended long range with pellets.
Although you can't tweak the charges to 5grs or less, there's a lot of 10gr combinations, at least 8 hunting combinations from 80grs to 150grs.
Swabbing between shots has been something many have done for decades, so its not new. Even the best of shots in competition swab between shots using BH209, with few exceptions.