Hottest primer out there. It will add some more pressure. How much hotter than the WW, you would have to compare some of the loading data between the two. You may have to cut back on the powder some. Red Dot is also a fast burning powder. Pressures would get high, pretty quick.
Chances are you will be able to find the Federal primer used with the same hull, wad, shot weight and powder you use with the WW primers. Then you can make any necessary adjustment(s) to compensate. Don't guess!
Here's an example from Alliant's data base for AA hulls:<center>
A WW primer in a AA hull using 17 gr. of Red Dot under a Winchester wad to push 1 1/8 oz. of weight at 1145 fps generates 10,000 psi... a good pressure.
A Fed primer in the same hull with the same powder drop pushing the same weight to the same speed generates 10,600 psi... also safe and very acceptable; no change at all would be needed to switch primers in this particular formula.
You will have to check the data YOU use to see what adjustments will be needed, if any.
What I'm referring to, Charlie, is that many dealers refuse to, or can't stock Remington primers because of the outrageous price increase. It was $280/5,000 the last I checked while CCI/Federal, and Winchester were ~ $115/5,000. Whatever the reason, I'm done with Remington primers, and going to Federal, never mind, I'm told, the Remington's were the cause of my cold weather bloopers with Green Dot and American Select which has even less cold weather tolerance.