7.62x39 vs 300AAC vs 6.5 Grendel

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Re: 7.62x39 vs 300AAC vs 6.5 Grendel

Post by JimTom » 10 Jan 2019, 2:58 am

Flyer wrote:I had a 527 full stock (lovely rifle) in 223 and disabled the set trigger so that it worked only off the main trigger. It was a great little rifle which I only sold to buy a Sako 85 in the same cailbre.

At least with the Grendel you can have a stash of 6.5 projectiles to use for that and your 6.5 Creedmoor.



Yeah that's true mate, have 95gn Vmax and 123gn SST already. Was going to get around to trying them in my Creedmoor.
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Re: 7.62x39 vs 300AAC vs 6.5 Grendel

Post by Flyer » 10 Jan 2019, 1:41 pm

According to all my books, 2209 gives the best velocity with 123gr 6.5CM bullets.

43.2gr of 2209 with 123gr Lapua Scenars shoots best in my 6.5CM Sako A7 - 0.375" 4-shot groups at 100m (well under 1/2 MOA) at 2815fps (chronoed).

44.2gr of 2209 shoots second best and was chronoed at 2880 - would make a good hunting round.

I also tested 45.2gr of 2209, which wasn't as accurate, but was a very fast load at 2960fps.

These should all be good ball-park figures for the 123gr SSTs. I loaded .015" off the lands, so OAL was 2.850" (2.865" to the lands with the 123gr Scenar). Lapua small primer cases (Starline SRP cases have almost identical case capacity) with CCI BR4 primers.
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Re: 7.62x39 vs 300AAC vs 6.5 Grendel

Post by in2anity » 10 Jan 2019, 1:58 pm

I thought we were talking about Grendel?
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Re: 7.62x39 vs 300AAC vs 6.5 Grendel

Post by JimTom » 10 Jan 2019, 4:24 pm

Yes mate we were, Flyer and I both have Creedmoors and the talk of a common projectile developed into a bit of a tangent in the conversation.
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Re: 7.62x39 vs 300AAC vs 6.5 Grendel

Post by JimTom » 15 Feb 2019, 1:48 pm

Just ordered a Ruger American Ranch in 300AAC for those who are interested in which way I went.
They are on sale at the moment for a fairly good price. Couldn’t help myself. Looking forward to taking it out and putting a few down range before chasing a few close range hogs with it.
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Re: 7.62x39 vs 300AAC vs 6.5 Grendel

Post by SCJ429 » 15 Feb 2019, 6:09 pm

Nice one, what bullet are you going to use for pigs?
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Re: 7.62x39 vs 300AAC vs 6.5 Grendel

Post by JimTom » 15 Feb 2019, 8:18 pm

G’day ate I have a fair few 130gn Speer HP that I used in my .308 but 3000fps was a bit quick and I think they expanded to quickly giving no penetration.

Hoping they will go ok in the blackout as I have 1000 of them. Do you have any projectile suggestions mate?
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Re: 7.62x39 vs 300AAC vs 6.5 Grendel

Post by Bill » 16 Feb 2019, 7:19 am

BO is bit of a dumpling past 200m but plenty for gun for pigs thou. I hate when sales influence a decision LOL. So what projectile will you be using, heavy or light ?
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Re: 7.62x39 vs 300AAC vs 6.5 Grendel

Post by JimTom » 16 Feb 2019, 8:13 am

Bill wrote:BO is bit of a dumpling past 200m but plenty for gun for pigs thou. I hate when sales influence a decision LOL. So what projectile will you be using, heavy or light ?


Mate I only intend on using it <100m. Most of the shots where I go are fairly close. 300 AAC will be spot on for what I want it for. After conducting research, I have been leaning towards the 300AAC for a while anyhow, I have a fair few projectiles for it already, and I guess the sale is what sealed the deal. In saying that if the 7.62x39 was on sale I do t think I would have purchased it.
Will be trying some 130gn HP initially mate. Have a few laying around so am hoping they go well.
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Re: 7.62x39 vs 300AAC vs 6.5 Grendel

Post by SCJ429 » 16 Feb 2019, 8:41 am

I don't have any experience with slow moving small projectiles, the only reduced hunting loads I have tried have been with big bores where you need something to open up at lower velocities. I wonder for you if the Speer TNT 125 would work. They are very frangable perhaps too much so. I will be interested to hear how your 130 grain Speer's go.
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Re: 7.62x39 vs 300AAC vs 6.5 Grendel

Post by JimTom » 16 Feb 2019, 9:36 am

SCJ429 wrote:I don't have any experience with slow moving small projectiles, the only reduced hunting loads I have tried have been with big bores where you need something to open up at lower velocities. I wonder for you if the Speer TNT 125 would work. They are very frangable perhaps too much so. I will be interested to hear how your 130 grain Speer's go.


Thanks mate. Will try the 130’s first and they’re no good will prob try a 125 of some description. Thanks for the suggestion mate. Will keep it in mind.
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Re: 7.62x39 vs 300AAC vs 6.5 Grendel

Post by vmaxaust » 19 Feb 2019, 6:48 pm

300BLK is great. The latest Ranch rifle has AR magazines or you can use the original type with rotary mag. I have rotary mag Ranch in 300 as well as a Ranch in 223. Bargain, accurate and great bolt action on either.
I also have a 300BLK Warwick rifle which is amazing.
Everyone bags the poor old 300 but until you really explore its capabilities and advantages by owning them you have no idea.
I reload all my 223, 300, 303 rifle calibres. For the 300 I cast my own projectiles and Hi Tek coat them. In the Ranch rifle there is no problem using Hi Tek coated cast bullets even at 2200fps without gas checks. No leading whatsoever, very accurate to 200 metres (I don't shoot these beyond 100 most of the time).
I started loading with Sierra 135gr bullets very successfully but have switched more and more to cast the same way I did with 303's. Easy on the barrels and no leading.
Don't write off the 300. It's not just a fad, but of course it isn't for everyone. Some people need to get 10 shots into 1" at 300 metres.




JimTom wrote: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 » 19 Feb 2019, 8:21 pm

Yeah mate I am looking forward to seeing what it can do.
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Re: 7.62x39 vs 300AAC vs 6.5 Grendel

Post by SCJ429 » 19 Feb 2019, 8:58 pm

vmaxaust wrote:Everyone bags the poor old 300 but until you really explore its capabilities and advantages by owning them you have no idea. ]


What advantages do you see over other 30 cals?
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Re: 7.62x39 vs 300AAC vs 6.5 Grendel

Post by vmaxaust » 20 Feb 2019, 5:46 am

SCJ429 wrote:
vmaxaust wrote:Everyone bags the poor old 300 but until you really explore its capabilities and advantages by owning them you have no idea. ]


What advantages do you see over other 30 cals?



Cheap to reload with light powder needs, many projectile options from 308, compact cartridge that still hits at least as hard as 7.62-39, in rifles with AR mags you have 10 shots in a compact magazine. It also doesn't hurt that on my Hornady Progressive press I can use the same shell plate as 223. For those who don't reload the bulk ammo from ADI is very good value and works very well.
Once again, if you are an eagle eye target shooter wanting the optimum in groups 300BLK may not be as good at the longest distances (although I've personally never tested it and I doubt the baggers here ever have) but for me it's easily as accurate as anything else to over 200 metres.
Most people who discount this round look at the ballistics and articles on line that show the 300 as a round that simply cannot potentially have sufficient range due to its light powder load causing its trajectory to be like a banana.
Once again...what distances are you shooting it at? For me personally and I believe many others the really long distances are virtually irrelevant. For me the positives much outweigh that one apparent negative.
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Re: 7.62x39 vs 300AAC vs 6.5 Grendel

Post by JimTom » 20 Feb 2019, 2:24 pm

Not that I intend on using it at that distance but I watched a video clip of a bloke shooting targets at 500yds with a 300AAC.
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Re: 7.62x39 vs 300AAC vs 6.5 Grendel

Post by in2anity » 25 Feb 2019, 9:44 pm

Under varying conditions, in my experience lighter 30 cal pills at mild velocities are really not that great over those medium+ distances, just sayin. Just keep your expectations in check i guess is what I’m sayin - horses for courses. If you have expectations about consistently grouping at medium distances and beyond, personally I’d steer clear of the small and somewhat limiting blk case. Fluctuating windage really destroy lighter, slow moving pills...
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Re: 7.62x39 vs 300AAC vs 6.5 Grendel

Post by JimTom » 26 Feb 2019, 8:33 pm

in2anity wrote:Under varying conditions, in my experience lighter 30 cal pills at mild velocities are really not that great over those medium+ distances, just sayin. Just keep your expectations in check i guess is what I’m sayin - horses for courses. If you have expectations about consistently grouping at medium distances and beyond, personally I’d steer clear of the small and somewhat limiting blk case. Fluctuating windage really destroy lighter, slow moving pills...


No expectations beyond 100m mate. I have other rifles to cover distance, I purchased this is purely as a 0-100m rifle.
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