ronsatspokane
Gold $$ Contributor
I would make the argument that a rifle capable of 600 yard effective range is not compatible with a home defense weapon. Optics, barrel length, attachments, and ammo for both of those criteria are significantly different. One of the fun parts of ar15s is having different uppers.
You want 600 yard effective range? Get a low to mid power variable optic and put an 16-20 inch 6 or 6.5 grendel variant upper with a bipod mounted. I like the 6mm better than 6.5 for grendel.
You want home defense with a mag restriction? take your pick of high energy close range ar 15 compatible rounds. Slap in a stronger spring and an adjustable gas block and your ar15 can chew anything you want and get more than double the energy per shot of 223 (450 bushmaster can get over 2.5k ftlbs).
Or you can use a shotgun. Which is better. Anything between nickel plated 4 buck and soft lead 00 works really well. I started out reloading for shotgun so I have done a lot of it. A lee loadall is like 50 bucks. Grab a couple hundred fgm hulls from a local trap club, some 12s4 wads (cut off petals off), some blue dot, and some bpi buckshot and you got cheap-ish home defense 12 gauge ammo you can tailor for recoil or function in any 12g. Its fun too. bpi has a good deal on number 1 buck which is the smallest I suggest for unplated lead. 16 pellet should be easy (4x4). Use 1 3/8 load data.
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Should cost about .50 per shell. Which is about what the junkiest 9 pelllet 00 costs right now. 16#1 has 50% more cutting area per shot. Thats a ton more damage in home defense range. And number 1 buck is the smallest pellet size that meets fbi minimum penetration testing. Best home defense ammo on the planet in my opinion, that's why I made a ton of it. Doesn't kick bad with blue dot either.
Your argument is invalidated by a branch of competition called High Power. High Power competition involves target competition at 200, 300 and 600 yards. The required weapon is a military weapon. Most use AR15's in 5.56 caliber (most are 223 Wilde these days). Only recently were optics up to 4.5 power allowed. Traditionally the competition involved open sights. I know people who participate in said competition and still use open sights. The weapon of choice is of course the ultimate close range defense weapon as well. Ultimate unless you are a shotgun fan. Personally I prefer my CZ Scorpion carbine to both a shotgun and an AR for short range self defense. Of course self defense is not why we own firearms. We own firearms to insure that we maintain ownership of our government. Those firearms just happen to serve well in self defense roles as well as hunting roles.