First of all, because not enough people were asking.... keep in mind, we also didn't have BH's over 150 back 3-4 years ago.....
Now, for a solution, you can get screw in heads up to 250, but you can also tap the back of a brass insert and utilize the screw in PDP weights. Also look at Lancaster Archery for point weight options (accessories to up weight, not heavier points). Keep in mind, all you are doing is moving the weak point. This has been discussed many times.
You can use 160 gr field points and steel adapters to make your own points. Same for broasdheads. Lots of possibilities to "make weight".
Best of luck!