Ok so I hav been reloading for 35 plus years I have 5 manuals and they all differ a bit
but I have been researching the 284 Winchester for a new build and the conflicting info is drastic but I did notice that some test rifles were model 88s and some were bolt action model 70s but max powder charge diff of 3.5 grains and Max vel 150-200 fps
both barrels are 22 inch
so any one have any info on the different info