Let's see.. 6.8 SPC vs 6.5 Grandel vs .300 BLK
- Thread starter sDot
- Start date
i built a 6.8 last year and i will never go back to 5.56. its a shame no militarys have money anymore because they should be changeing over to the 6.8 no contest. 6.8 is easy avalibale my local store stocks it.
the 6.8 is a military cartridge. better stopping power and accurasy and range then the 5.56.
the 6.5 would be my next choice. its more of a long range target shooting cartridge or light game.
the .300 i think is clumsey and is more for slienced guns and close range power.
i have an artical in a magazine about all the new cals for the AR15. if you want it i can send it to you. it says accroding to them .30 remington AR is the best cal in the AR. but so far i think the remington R-15 is the only gun useing it. if you make a custom barrel thats is the cal to go with tho.
if you want the mag let me know. i can dig it out.
the 6.8 is a military cartridge. better stopping power and accurasy and range then the 5.56.
the 6.5 would be my next choice. its more of a long range target shooting cartridge or light game.
the .300 i think is clumsey and is more for slienced guns and close range power.
i have an artical in a magazine about all the new cals for the AR15. if you want it i can send it to you. it says accroding to them .30 remington AR is the best cal in the AR. but so far i think the remington R-15 is the only gun useing it. if you make a custom barrel thats is the cal to go with tho.
if you want the mag let me know. i can dig it out.
300 BLACKOUT YEAR Haley Strategic
300 BLK
Travis Haley seems to think its pretty effective, don't know anything about it but his opinion carries weight with me. If I was into resticteds and wasn't both a cheap bastard and broke I would probably go this way. It defiantly won't have the power of 6.5 or 6.8 at range though. But Travis proves its all about the skill of the operator. He's quite the impressive shooter, uses an aimpoint to hit a 750m target.
300 BLK
Travis Haley seems to think its pretty effective, don't know anything about it but his opinion carries weight with me. If I was into resticteds and wasn't both a cheap bastard and broke I would probably go this way. It defiantly won't have the power of 6.5 or 6.8 at range though. But Travis proves its all about the skill of the operator. He's quite the impressive shooter, uses an aimpoint to hit a 750m target.
sithinside
Regular
- Location
- Edmonton, AB
300BLK is what I'll be gunning for on my next build once I get my reloading down.
That sounds reasonable to me. Maybe even a 14.5" barrel would seal the deal.
Although a 7.5" AR in 300 BLK would be awesome.
Build whatever you can find a barrel for....seriously
If you just want somthing different, there is nothing that is more entertaining than a big bore ( 458 Socom etc ) for ####s and grins. Puts a smile on everyones face everytime at the range
A 458 Socom loaded with the Hornady 325 Grain flex tip bullet is just so goofy looking its ###y !
The novelty of 300Whisper , 300blk etc wore off for me since we can't have supressors. Great if you want to have a shorty barrel
Between the 6.5 Grendel ( now a SAMMI round ) and 6.8 just build whatevery you can get a barrel for.
Something of note is there are different SPC chambers . My Noveske is a SPC II which is NOT the standard SAAMI chamber dimension. All load data would be fine with both. Some off the shelf load is pushing the pressure envelope of the SAAMI chamber
If you want somthing different both 6.8 and 6.5 will be a good choice. However, if you are trying to built a long range bench gun, then the 6.5 Grendel has the edge for the following reasons
- far more choices of long range projectiles for 6.5 vs the .277 bullet choices
- look at the BC of similar weight projectiles. Advantage for 6.5 . This is why the lates "308 Win " long range cartridges are the 6.5X47 Lapua, 260 Rem , 6.5 Creedmore
- the 123 Gr Scenar has higher BC than all their 308 dia Scenars
- Lapua doesn't make Scenars in .277 . Berger doesn't make match bullets in .277
- The Remingtion and SSA 6.8 SPC brass is "decent" brass. The Lapua made 6.5Grendel brass ( the AA brass is made by Lapua as well ) is outstanding.
- I can make plinking 6.5 Grendel brass by easily fireforming 7.62X39 brass after one pass of sizing die. Scrap rate is very low ( less than 5 in 100 )
All this is academic, since you are going to have a hard time finding Grendel barrel in Canada
If you just want somthing different, there is nothing that is more entertaining than a big bore ( 458 Socom etc ) for ####s and grins. Puts a smile on everyones face everytime at the range
A 458 Socom loaded with the Hornady 325 Grain flex tip bullet is just so goofy looking its ###y !
The novelty of 300Whisper , 300blk etc wore off for me since we can't have supressors. Great if you want to have a shorty barrel
Between the 6.5 Grendel ( now a SAMMI round ) and 6.8 just build whatevery you can get a barrel for.
Something of note is there are different SPC chambers . My Noveske is a SPC II which is NOT the standard SAAMI chamber dimension. All load data would be fine with both. Some off the shelf load is pushing the pressure envelope of the SAAMI chamber
If you want somthing different both 6.8 and 6.5 will be a good choice. However, if you are trying to built a long range bench gun, then the 6.5 Grendel has the edge for the following reasons
- far more choices of long range projectiles for 6.5 vs the .277 bullet choices
- look at the BC of similar weight projectiles. Advantage for 6.5 . This is why the lates "308 Win " long range cartridges are the 6.5X47 Lapua, 260 Rem , 6.5 Creedmore
- the 123 Gr Scenar has higher BC than all their 308 dia Scenars
- Lapua doesn't make Scenars in .277 . Berger doesn't make match bullets in .277
- The Remingtion and SSA 6.8 SPC brass is "decent" brass. The Lapua made 6.5Grendel brass ( the AA brass is made by Lapua as well ) is outstanding.
- I can make plinking 6.5 Grendel brass by easily fireforming 7.62X39 brass after one pass of sizing die. Scrap rate is very low ( less than 5 in 100 )
All this is academic, since you are going to have a hard time finding Grendel barrel in Canada
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A lot of people are hating on 300 BLK but they miss one of the nice features of the round. You get all the benefits of the larger 7.62x39 ARs when firing supersonic rounds BUT you don't have the negatives of a compromised bolt from the larger case head. Even the 6.8 SPC and 6.5 Grendel case heads are larger, although I haven't read of any issues per say. But you do need different mags and bolts.
I have no experience with the 6.5 or the 6.8. I like the .300BLK but I think it's a niche round. It interests me primarily as a way to optimize ARs for short barrels. 5.56 out of a 9" barrel is a waste...I would much rather shoot something that's burned 90% of its powder by the time it exits the barrel. .300BLK allows for that.
Other than that I don't really see the point of it and I think a lot of people want it to be something it's not.
Other than that I don't really see the point of it and I think a lot of people want it to be something it's not.
Didn't say over anything else. My point is I wouldn't go less than 12.5" with 5.56. 11.5" if I absolutely had to but not 10.5". I would prefer to have nothing but 6.8 SPC in a 12.5" or longer barrelled AR but cost and availability keeps me interested in 5.56.
As to why...noise, flash and loss of velocity.
I don't have any information on 6.5 Grendel or 6.8 SPC but here's some ballistic data comparissons between .300 Blackout and 5.56m (M193) ammunition. I don't see where anyone is thrying to make the cartridge more than what it is.
Here's something for you and VanIsler to consider...
For a range gun 5.56mm is a no brainer for general plinking or paper shooting. I think barrel length and terminal/external ballistics is moot point for that activity. There's no doubt it cost more to shoot other cartridges but it'd be pretty boring if life consisted of only (1) choice.
Who said you were a hater? I never implied that. Why would you assume that I was? I'm simply presenting the information I have for others to have, including yourself. Like I said, I don't have info on the other cartridges to post. If I did, I certainly would.
