I'd throw this one out there - it's 2016, print media has lower touch point per dollar value than online marketing.

What is your marketing goal? To reach NRA members, or a broader public? I ask because I tend to expect the NRA publications have the greatest market access simply because the subscription comes with your membership. Field & Stream, on the other hand, one of the most highly distributed hunting/outdoors print media, is more widely distributed to the general public. For example, when you take a walk through any of the sundry shops at an airport, or through a gas station, most often they have Field & Stream, OutdoorLife, and Petersen's Hunting magazine on the shelf. Guns & Ammo is another one common on shelves. But typically you only see NRA pub's like American Rifleman on the shelf at specialty shops like Cableas, along side a hundred other magazines. This should be something to consider when spending your marketing dollars - do you want to access a virtually subscription only market, or a broader outlet market?

One thing I have found in marketing - it's VERY easy to get information straight from the source. Magazines want your advertising money, so if you pick up a phone or send an email inquiring about their market access, they'll jump stiff legged to share their touch-point analytics with you.