Joseph Castelli

As the founder of Founders Defense Training, my mission is straightforward: to empower individuals with the knowledge, skills, and mindset necessary for confident and responsible self-defense. I’m a USCCA Certified Instructor and NRA Range Safety Officer, bringing over 12 years of experience in shooting sports and firearms instruction to every class I lead.

I compete as a Master-class shooter in the Glock Sport Shooting Foundation (GSSF) and stay active in USPSA, Steel Challenge, and other competitive shooting disciplines. This hands-on experience keeps my skills sharp and ensures that my students receive practical, real-world instruction grounded in proven techniques.

At Founders Defense Training, I believe that you are your first responder—and that the right to protect yourself and your loved ones is not just a right, but a responsibility. My goal is to help each student build a safe, capable foundation for defensive readiness, whether they’re new to firearms or seeking to advance their performance and mindset.

Every course I offer is built on three core values: safety, respect, and purpose. If you're ready to take ownership of your personal safety or step into the exciting world of competitive shooting, I’m here to guide your journey with the training and support you deserve.