Buying a firearm today is a bit like buying an iPhone—it’s more complicated than it was over 15 years ago. Just as the iPhone has an ecosystem of products and apps to buy into, firearms come with their own interconnected universe: ammunition.

Ammunition is the lifeblood of any shooter, often too expensive yet never abundant enough. Beyond cost, there’s an ongoing debate: Should you own multiple weapons chambered in various calibers, or consolidate around one? Each approach has its pros and cons, and your decision shapes not only your experience as a shooter but also your wallet.

Consolidation: A Jack of All Trades

One argument for sticking with a single caliber is simple: budget.

Imagine the costs involved in owning firearms chambered in .22LR, .380, 9mm, .40 S&W, and .45 ACP. It’s not just the guns themselves—it’s also ammunition, cleaning supplies, holsters, optics, and other accessories. By narrowing your collection to just two or three guns in the same caliber, you simplify maintenance and consolidate some of the expenses.

But it’s not just about cost—it’s also about skill. Time on the range is crucial for improving your marksmanship, and shooting consistently in one caliber helps you refine your muscle memory and shooting habits. After all, even the most tricked-out gun won’t make up for a lack of practice.

Diversification: A Master of None—But Better

All that talk about saving money is nice, but let’s face it: Some firearms are meant to be paired with their iconic calibers. Would you buy a 1911 in anything other than .45 ACP? Or skip out on the Ruger 10/22, a classic .22LR rifle? And let’s not forget the FN P90, with its unique 5.7x28mm round.

Each caliber serves a different purpose and excels in its own way. A 9mm might be a fantastic all-around round, but it can’t replace the long-range precision of a .308 or the brute power of a .45 ACP. Diversifying your collection allows you to appreciate the unique strengths of different rounds—and, let’s be honest, it’s fun.

Striking a Balance

Thankfully, you’re not a government agency dealing with massive procurement costs, so branching out into other calibers is much more manageable.

But if you’re just starting and want some advice, stick to the basics:

• 9mm for pistols
• 5.56 NATO for rifles
• 12 gauge for shotguns

These are versatile, widely available, and cost-effective rounds that cover most bases for personal defense and recreational shooting.

Once you feel like you’ve mastered these staples, go ahead and branch out. Or skip the practical advice entirely and buy whatever your heart desires—because at the end of the day, shooting is as much about personal enjoyment as it is about practicality. Only you know what you want, so follow your instincts and have fun building your collection.

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