I dunno how many are planned in the run, I'll ask, but my H&R contact is dealing with a family health emergency and I don't expect he'll have access to the info. Common sense dictates they should order enough barrels to fill all of the existing backorders plus enough to fill a reasonable expectation of a few month future orders, but their production schedules are set up months in advance, so that may not happen. The 44mag is real popular for the Indiana, MS and LA deer seasons, their marketing department should be aware of the demand, but the economic situation may dictate otherwise, probably depends on their profit margin on accessory barrels, they probably make more money on complete firearms.
Tim