7.62x39 vs 300AAC vs 6.5 Grendel

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7.62x39 vs 300AAC vs 6.5 Grendel

Post by JimTom » 05 Jan 2019, 10:41 am

G'day Gents

Have been doing a little research on the pro's and cons of the above mentioned cartridges for use as a close range (under 100M) pig buster. Looking at a Ruger American Ranch or Similar. Yes I know that rifle doesn't come in Grendel.

I think either one would be suitable, however I thought I would call on the brains trust to chuck their thoughts and opinions into the ring.

Thanks for your time in advance fellas, sincerely appreciated.
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Re: 7.62x39 vs 300AAC vs 6.5 Grendel

Post by JimTom » 05 Jan 2019, 10:44 am

I did do a search before asking however nothing recent on this forum. A few people talking down the 300AAC as a fad. Be interested in people's thoughts, regardless of whether you own a rifle in these chamberings or not.
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Re: 7.62x39 vs 300AAC vs 6.5 Grendel

Post by wrenchman » 05 Jan 2019, 11:43 am

i would go 7.62x39 ammo is cheeper to get and will do what you want the 300 and the 7.62x39 are real close all the guys that have 6.5 are hand loaders
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Re: 7.62x39 vs 300AAC vs 6.5 Grendel

Post by JimTom » 05 Jan 2019, 11:56 am

wrenchman wrote:i would go 7.62x39 ammo is cheeper to get and will do what you want the 300 and the 7.62x39 are real close all the guys that have 6.5 are hand loaders



Not to worried about the availability of factory ammo as I will hand load for which ever I get mate.
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Re: 7.62x39 vs 300AAC vs 6.5 Grendel

Post by SCJ429 » 05 Jan 2019, 12:37 pm

The 762 x 39 biggest downside is that it uses 311 projectiles. If you chambered a 308 barrel in it you would have a winner.

The Grendel is very accurate also, you could load it to shoot subsonic if you wanted to.

The 300 has a very narrow focus but if that is what floats your boat.....
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Re: 7.62x39 vs 300AAC vs 6.5 Grendel

Post by JimTom » 05 Jan 2019, 12:41 pm

SCJ429 wrote:The 762 x 39 biggest downside is that it uses 311 projectiles. If you chambered a 308 barrel in it you would have a winner.

The Grendel is very accurate also, you could load it to shoot subsonic if you wanted to.

The 300 has a very narrow focus but if that is what floats your boat.....




Yeah mate agree about the .311 projectiles and the 7.62x39. Pity they aren't .308. Would be a winner there. That as I see it is the only advantage the 300AAC has over the 7.62x39.

Plus I have a surplus of .308 130gn projectiles that'd like to use. Still that's no reason to buy a rifle in that calibre.
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Re: 7.62x39 vs 300AAC vs 6.5 Grendel

Post by wanneroo » 05 Jan 2019, 1:19 pm

JimTom wrote:
SCJ429 wrote:The 762 x 39 biggest downside is that it uses 311 projectiles. If you chambered a 308 barrel in it you would have a winner.

The Grendel is very accurate also, you could load it to shoot subsonic if you wanted to.

The 300 has a very narrow focus but if that is what floats your boat.....




Yeah mate agree about the .311 projectiles and the 7.62x39. Pity they aren't .308. Would be a winner there. That as I see it is the only advantage the 300AAC has over the 7.62x39.

Plus I have a surplus of .308 130gn projectiles that'd like to use. Still that's no reason to buy a rifle in that calibre.


One reason I shoot 300 BO is the easy compatibility with .308 projectiles. There is also a much larger selection of .308 projectiles to pick from on the market as well. I use some of the same bullets for 7.62 NATO/308 Win as I do 300 BO. A 150g FMJ Hornady bullet is a cheap plinking/target bullet I use for both cartridges.
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Re: 7.62x39 vs 300AAC vs 6.5 Grendel

Post by wanneroo » 05 Jan 2019, 1:25 pm

JimTom wrote:I did do a search before asking however nothing recent on this forum. A few people talking down the 300AAC as a fad. Be interested in people's thoughts, regardless of whether you own a rifle in these chamberings or not.


I thought at one point 300 BO would be a fad, but every year here in the USA more and more rifles come to market, more ammo comes to market, more powders, 300 BO specific bullets are being made such as expanding subsonic bullets, etc.

Of course what drives it is the AR-15 type rifles. The 300 BO has the rear end of a .223/5.56, so bolts and magazines are the same, easy compatibility with existing products out there.
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Re: 7.62x39 vs 300AAC vs 6.5 Grendel

Post by JimTom » 05 Jan 2019, 1:34 pm

It’s definitely growing on me.
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Re: 7.62x39 vs 300AAC vs 6.5 Grendel

Post by in2anity » 05 Jan 2019, 9:33 pm

Even if the BO becomes truly regarded as a “fad”, doesn’t that mainly effect the cost of factory ammo? Handloading for the BO will basically exclude you from this issue especially considering compatibility with 30cal and front-locking lugs. And if you load it down like it’s kinda supposed to be used, barrel life should be long..
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Re: 7.62x39 vs 300AAC vs 6.5 Grendel

Post by JimTom » 05 Jan 2019, 9:35 pm

in2anity wrote:Even if the BO becomes truly regarded as a “fad”, doesn’t that mainly effect the cost of factory ammo? Handloading for the BO will basically exclude you from this issue especially considering compatibility with 30cal and front-locking lugs. And if you load it down like it’s kinda supposed to be used, barrel life should be long..



This is true mate
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Re: 7.62x39 vs 300AAC vs 6.5 Grendel

Post by in2anity » 06 Jan 2019, 11:54 am

If we were in some eastern block country and one could go knock on the door of the local warlord to buy a pallet of ak ammo, the 7.62x39 would be a no brainer. Alas this is not the case down here in Oz. As others have noted .311 ammo (and projectiles) is not exactly common around these parts. Hence the decision is in my eyes between the BO and Grendel. Generally I feel the Grendel will outshoot the BO, especially over those longer distances - the Grendel is basically a superior cartridge. Nevertheless the BO could give you a deeper experience given the sheer variety of consumables and information out there regarding handloading 30cals. And personally I like that side of shooting - unraveling the enigma that is your rifle...

Still, all things said, if you want a gun that can benchrest a hair off a fleas back, I’d be more focused on specific actions and barrels (rather than the higher level discussion of caliber A vs caliber B)
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Re: 7.62x39 vs 300AAC vs 6.5 Grendel

Post by JimTom » 06 Jan 2019, 12:05 pm

No mate not after that kind of accuracy mate. My 6.5Creedmoor is my accurate longer range hitter. My 308 pretty good also.
Considering I have a Creedmoor I have been leaning away from the Grendel, and more towards the Blackout. Only want it for <100M.
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Re: 7.62x39 vs 300AAC vs 6.5 Grendel

Post by in2anity » 06 Jan 2019, 3:51 pm

JimTom wrote:No mate not after that kind of accuracy mate. My 6.5Creedmoor is my accurate longer range hitter. My 308 pretty good also.
Considering I have a Creedmoor I have been leaning away from the Grendel, and more towards the Blackout. Only want it for <100M.


The BO is a cool concept, I have nearly purchased one on several occasions in the past... I shoot a lot of 30cal reduced loads across a few different rifles, and powder-positioning is indeed a real issue/variable in those larger cases. The BO mitigates this through the smaller case size. And I think a fine, fast-burning powder like AR2205 could work well in the smaller BO case. I shoot a 32H&R magnum rifle, and it's basically like a mini 30cal - it's pet load is a full case of 2205 under basically a 30cal pill (well 32cal technically but same-same). It shoots like absolute stink out to 100m, and it's only a humble rear-locking lever gun!

BTW if you do end up choosing the BO - I recommend trying the Berry's 150gr 30-30 plated bullets - they are significantly cheaper than jacketed, and considering the BO is basically designed to shoot under 2000fps, I think they would be almost perfect for the BO specs.
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Re: 7.62x39 vs 300AAC vs 6.5 Grendel

Post by in2anity » 06 Jan 2019, 3:59 pm

I shot this 50m 8-shot experimental group in my 308 bolt gun recently; a full case of Trail Boss under the aforementioned Berry's bullet:

308w_TB.jpg
14.5gr Trail Boss under Berry's 150gr 30-30 (.308) @50m
308w_TB.jpg (536.54 KiB) Viewed 239 times


The one shot that's a bit low was me pulling the trigger at the wrong time - that's just ludicrous accuracy IMO given how little it cost to cook :crazy:

Getting back to your BO requirements - you should try and get a heavier barrelled carbine if possible - perhaps the Ruger Ranch?
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Re: 7.62x39 vs 300AAC vs 6.5 Grendel

Post by bigrich » 06 Jan 2019, 5:05 pm

after looking at some ballistics on these rounds, it seems like their a bolt action in the 30-30 niche . not a critisism , just a observation . the 6.5 would have superior accuracy at distance i would imagine :unknown: i have considered a ruger bolt gun in 44 mag as a 100 yard rifle, but the jury's still out on that for me ;) the 300 BO does sound interesting :)

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Re: 7.62x39 vs 300AAC vs 6.5 Grendel

Post by JimTom » 06 Jan 2019, 6:08 pm

in2anity wrote:I shot this 50m 8-shot experimental group in my 308 bolt gun recently; a full case of Trail Boss under the aforementioned Berry's bullet:

308w_TB.jpg


The one shot that's a bit low was me pulling the trigger at the wrong time - that's just ludicrous accuracy IMO given how little it cost to cook :crazy:

Getting back to your BO requirements - you should try and get a heavier barrelled carbine if possible - perhaps the Ruger Ranch?



Nice shooting mate, and I am looking at the Ruger American ranch. Be perfect for what I want it for.
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Re: 7.62x39 vs 300AAC vs 6.5 Grendel

Post by SCJ429 » 06 Jan 2019, 7:41 pm

Would Trail Boss in your 308 do everything that you were hoping to do with the 300? I think that a 45/70 with Trail Boss is a pretty good alternative to the Blackout.
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