Brian, he did say "in any case of capacity greater than the 35 Remington."
I also have the article you mentioned in my collection of references.
Emphasis on "greater than."
I'm afraid that's a bit hot for best cast bullet accuracy in the .35, and fast powders must be loaded to lower levels using either plainbase or gaschecked lead bullets for best accuracy in the .35 Remington.
Pass on the full 13 grains.
Incidentally, with lighter cast bullets in the .30's, such as the Lee Soupcan (C113F) or the RCBS 130 grain or thereabouts, considerably better accuracy is obtained in the nine grain range for about 15-1600 fps in the .30-06 and .308. Accuracy is also better with the heavier bullets as well - give it a try. The velocity may not meet your standards at 12-300 fps with the 150-180 grain bullets, but accuracy is improved here as well assuming adequate rifling pitch to stabilize.
At some point pressures with fast powders and the quick kick they give cast bullets cause accuracy to fall off. I don't suggest this load with plainbase bullets (even nine grains) as it responds better with gascheck bullets. Drop the load to seven grains or less in any case of .308 size or larger using plainbase bullets and Red Dot.
Accuracy will be much better with plainbase using the even further reduced charge.
I have never shot a load using 13 grains of Red Dot in various calibers that didn't shoot somewhat better when the charge was reduced. With due respect to Mr. Harris, who is one of my favorite writers and quite knowledgeable.
He settled on the 13 grain range as universally suitable, but not necessarily optimum in accuracy for all, which is an important distinction to make. 13 Red Dot and the 405 Lee FN make an excellent load in the .45-70 at about 1150 fps, for instance, but is not recommended for old Trapdoor Springfields.
So, for even better accuracy with cast bullets, drop that charge of Red Dot!
Jacketed bullets are less of a problem with this 13 grain load.
However, it is still not a jacketed bullet load at 13 grains in the .35 Remington. Drop the charge. Doing so still stays within Ed's idea for a economical powder choice, and is more proper as to pressures.