I cannot find sufficient reliable information about a product or entity called "Henry Big Boy 357 Side Gate 1" to write a comprehensive and informative blog post. My knowledge base does not include detailed specifications for firearms or their parts. To create such a post, I would need access to official manufacturer documentation, user manuals, and other credible sources.
If you could provide more context, such as the manufacturer's name, model number clarification, or links to relevant websites, I might be able to assist you. For example, if "Henry Big Boy 357 Side Gate 1" refers to a specific modification or aftermarket part for a Henry Big Boy .357 Magnum rifle, providing details on that would allow me to craft a helpful article.
Remember: When researching firearms, always consult official sources and adhere to all relevant safety regulations.