Re: 6mm/284 shehane?
No,I believe that the Shehane is an improved version.So if you already have 6-284 Shehane fireformed cases then a warmish 6-284 load would work for a starting load.If you are starting out with 6.5-284 brass and necking down to fireform cases,then you need to use regular 6-284 data.
Steve