You may be interested in the supplemental data for Speers new 33TNT published on their website
http://www.speer-bullets.com/pdf/Rel...A/22h33tnt.pdf
Note that it calls for PISTOL primers. Seems we are starting to rediscover what many vintage reloaders knew years ago. Note also the starting loads for L'il gun are compressed, and other powders are pretty warm also. Speer seems to think the pistol primers are up to the task.