We hunted with SNS on Orchard Ranch with Richard Fink and horses. We weren’t really horsemen but that in itself gave us a lot to talk about. Son and I both got antelope over 80”. It was a 3 day hunt and we made it a one day affair. Guide knew where the animals were.
How are you measuring your base to ogive? If you are using some type of bullet comparator, you should be getting closer dimension than that. I wouldn't be concerned with cartridge overall length except that it fits in a magazine if you using a repeater. Most shooters looking for accuracy are...
If you are going to hunt this year and do not have any preference points, your only option is to get in the special draw with the more expensive license.