Can't help you with outlets in central MA for that, but I believe the bullets are available as a component, as are Lehigh products.
Mxxxxxxxx has them, I know.
If you buy some and come down (near Foxwoods), I'll assist you with reloading them. Range onsite.
PM me for details.
If so, I queried TSUSA last Summer about this in case lots (9mm) and they said that they would be getting some in. I asked for prices and never got a response . . . twice. I occasionally checked their website and only saw 20 rd boxes once or twice. A number of us instructors wanted this stuff as it is great on steel at any distance.
Last time at KTP (~1 yr ago) the shelf had an equivalent product marked at ~$20/box (too high) but no product.
So you might give TSUSA a try and if so report back.