6.5 G vs 300 Blk in 14.5" AR?

[Tipsymutt]

Hi guys,
Been pondering building a new home defense AR now that our supreme overloads in NJ have decided that us peasants are not to be trusted with more than 10 round mags. I figure that if I have to limit my AR or pistol to 10 rounds, might as well make each round more effective.

I've been shooting the Grendel since 2005, and am a big fan of the round, but just want to be sure that I'm not missing anything. So, in an apples to apples comparison, say a 100gr TTSX, which would you go with? Also, any feeding concerns? 6.5G can seem to be mag picky while 300 bo seems less mag sensitive....

Thoughts?

Thanks

[montana]

For home defense in a pistol I would go with the 300 Blk. Burns all the powder "less blast", less recoil "faster follow up shots", reliable mags. If you are going with a rifle and might use it for hunting, the Grendel would be my first choice.

[Bigs28]

I personally don't see any point in a 300blk except suppressed sub sonic plinking fun. No real world application for me compared to the alternative.

[Klem]

I personally don't see any point in a 300blk except suppressed sub sonic plinking fun. No real world application for me compared to the alternative.

+1

[StoneHendge]

My home defense carbine is a 16" 300 BLK. Truck pistol is a10" BLK. 110 gr Varmageddons @ 2330 out of the carbine will put a quick stop to any threat and will likely dump close to 100% of its energy into a 2 legged varmint. Might make a mess of your carpeting though. My carbine weighs about 7 lbs with a Vortex Venom red dot on it so it's very maneuverable, but recoil is very manageable. All the powder burns in about 9" (they use Magnum pistol powder) so muzzle blast is pretty sudued. I'm still waiting for Nosler to do a Varmageddon or BTV in 6.5. I actually think 6x45 would be the best home defense caliber given that the recoil is less than 223 while pushing 70 gr BTVs at around 2700-2800, but I'd hate to have to try and explain to a jury why commercially available calibers weren't good enough for me.

[41bear]

300 BO, 10.5" shooting LEHIGH 78 gr CQB ammo (2800 out of a 16" - 2600 out of a 10.5). Deadly, commercial, little to no chance of passing thru walls to shoot people next door, a major concern where I live. I feel it's the best solution to any possible break in and will be contained inside my house.

[Bigs28]

300 BO, 10.5" shooting LEHIGH 78 gr CQB ammo (2800 out of a 16" - 2600 out of a 10.5). Deadly, commercial, little to no chance of passing thru walls to shoot people next door, a major concern where I live. I feel it's the best solution to any possible break in and will be contained inside my house.

I will take my 12g with 00 buck

[41bear]

I will take my 12g with 00 buck

To each his own but I bet mine's lighter holds way more ammo and is alot less noisy.

[StoneHendge]

To each his own but I bet mine's lighter holds way more ammo and is alot less noisy.

Plus, Joe Biden recommends a shotgun. And one must assume he can't be right.

[worthen86ford]

From my perspective either are fine rounds for your stated purpose. I went round and round with this as well and ended up building a Grendel pistol, but I have personally found that less is more. I only get to the range about 1-2 times a month. When I go, I normally try to train with my CCW since its normally on me and most likely to be used for social work. When I train with long guns, I end up always using my 16” Grendel. I have set that rifle up like a recce or general purpose rifle with a LVPO, WML, and sling. I use it for hunting and for all intents and purposes serves as my SHTF/WROL/home defense rifle. The Grendel pistol never gets shot, I never train with it, and thus I feel more comfortable using my 16” rifle if I ever needed to for home defense.

The other revelation that I had is that my CCW is either on me or bedside. So in reality, any home defense situation I find myself in will likely be fought with that rather than my long gun. I guess my point is I would evaluate the tools that you have and determine if any of those could fill the role you see a gap in. if so, then concentrate on training, ammo, and support equipment that give you an edge.

Then again, i know how it is, sometimes you just need something new and you have to justify it with a purpose. If that is the case, I would choose to stick with the same mags and ammo that I have on hand. If you have Grendel already, build a Grendel. If you have a 300blk already and a Grendel, then build either one.

[Grendelight]

Have you considered something like a 458 SOCOM? It performs exceptionally well out of short barrels with a tremendous amount of stopping power. Fits standard AR mags, and you will absolutely be getting the most punch out of 10 rounds short of a 12 gauge shotgun (albeit an AR is far more ergonomic, shorter, and handier than a 12 gauge).

[StoneHendge]

Have you considered something like a 458 SOCOM? It performs exceptionally well out of short barrels with a tremendous amount of stopping power. Fits standard AR mags, and you will absolutely be getting the most punch out of 10 rounds short of a 12 gauge shotgun (albeit an AR is far more ergonomic, shorter, and handier than a 12 gauge).

I love me some 458 Socom, but I would only trust my life to it if water jugs made an alliance with watermelons and revolted.

[Popeye212]

To each his own but I bet mine's lighter holds way more ammo and is alot less noisy.

Except that yours can't fire 16 .33 caliber projectiles at once. That's over half your mag dump. Doesn't need as many rounds likelihood of missing is pretty slim

[1Shot]

Unless you live out in the middle of nowhere neither the 300 BO or 6.5 Grendel would make a good home defense firearm. Too much penetration and you really don't want to kill your neighbor in the house next to you much less a family member in the next room. Even the 12 ga with any size buck shot can be a problem of over penetration inside a house. Plain old bird shot inside a house is the best. From across the room it hits like a slug on meat but really slows down going through walls.

[Tipsymutt]

Thanks all. I would love to go the suppressed SBR route, but here in NJ I have a better chance of seeing a lechrapcon riding a unicorn than legally obtaining one. The problem with going the AR pistol route is that in NJ, you need one permit per pistol, and you can only buy one pistol per month, and each permit is only good for 90 days and it takes like 6 weeks to 6 months to get a batch of permits... so that would take a while and kill a permit that I could use for an actual pistol....
Also.... colaposable stocks are verboten...
So I'm going for a rifle as short and light as I can.

I have my 18" grendel for target and hunting, etc.