I am a AR nut. I have 5.56, 7.62x39, Grendel, 25-45, 6x45, 30 American, 350 Legend, 450 Bushmaster, 458 Socom, and a Beowulf. The thermal lives on the 7.62. With the availability of the Wolf 154 gr SP ammo, I don't bother chasing brass, and I bought a bunch of it when it was available.
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With a 350 Legend, you can use the same bolt, possibly the mag. A 6.5 Grendel, would be a good choice, but you will have to change the bolt and mags. Then the same goes for the 6.8 SPC. Then there is the 450 Bushmaster, it will require a different bolt and mags. Then there is the 25-45, it's basically a 223 case necked up to 25 caliber, very similar to the old 6mm TCU and 7mm TCU. Which both of those would not be bad choices. Then there is the 458 SOCOM, 375 SOCOM and the 50 Beowulf. On all three of those cases, you also need to make sure you have a large ejection port, those cases are pretty fat. Then the 300 Blackout and 7.62x 39.
The 350 Legend, would be the quickest, cheapest way to get to where you want to be. The Grendel would be a good choice also. The big bore calibers can greatly step up how much energy you hit them with.Last edited by RifleBowPistol; 02-28-2021, 09:57 PM.
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same reason a 16" grendel won't perform as well as a 24".
here is some real data on ar15 platform. https://www.everydaymarksman.co/equi...rel-selection/
any calibers where you derive from their optimal length barrel to shorten them up will suffer in performance ... chop a 7mag to 16" and it's no longer a 7 mag add insult to injury, the bullets made for 7 mag are usually harder and won't expand as well at lower speed either...
take the new craze 8" 556 ... and they are almost the performance of a 22mag ...
I run a faxon pencil 20" on my 556 pig gun .. for that exact reason. and it's still just a hair over 6LBS.
but i won't use it on steel up close , it really craters ar500 bad.
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Originally posted by imyomama View Postsame reason a 16" grendel won't perform as well as a 24".
here is some real data on ar15 platform. https://www.everydaymarksman.co/equi...rel-selection/
any calibers where you derive from their optimal length barrel to shorten them up will suffer in performance ... chop a 7mag to 16" and it's no longer a 7 mag add insult to injury, the bullets made for 7 mag are usually harder and won't expand as well at lower speed either...
take the new craze 8" 556 ... and they are almost the performance of a 22mag ...
I run a faxon pencil 20" on my 556 pig gun .. for that exact reason. and it's still just a hair over 6LBS.
but i won't use it on steel up close , it really craters ar500 bad.
16" barrel on both, the 6.8 has the edge out to 500 yards.
If you're a paper puncher, the Grendel is probably in your best interest.
Hunting scenarios, the Grendel has no advantage other than a slight increase in SD.
The 6.5 needs a longer barrel, but most I see are running short barrels, talking about how superior the 6.5 is to the 6.8.
Here is some good reading on it.
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Originally posted by MadHatter View PostYeah, a lot of people miss this.
16" barrel on both, the 6.8 has the edge out to 500 yards.
If you're a paper puncher, the Grendel is probably in your best interest.
Hunting scenarios, the Grendel has no advantage other than a slight increase in SD.
The 6.5 needs a longer barrel, but most I see are running short barrels, talking about how superior the 6.5 is to the 6.8.
Here is some good reading on it.
https://thebiggamehuntingblog.com/6-...s-6-5-grendel/
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Originally posted by MadHatter View PostYeah, a lot of people miss this.
16" barrel on both, the 6.8 has the edge out to 500 yards.
If you're a paper puncher, the Grendel is probably in your best interest.
Hunting scenarios, the Grendel has no advantage other than a slight increase in SD.
The 6.5 needs a longer barrel, but most I see are running short barrels, talking about how superior the 6.5 is to the 6.8.
Here is some good reading on it.
https://thebiggamehuntingblog.com/6-...s-6-5-grendel/
I have, and load, for both. If I could only have one, it would be the Grendel.
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I went with 6x45. One pass of .223 brass through the 6x45 die, add a primer, powder and a 6 mm bullet and you have a loaded 6x45. Same bolt as a .223, just a different barrel. I really like mine. And .223 brass is plentiful and free at my range. I have a little trouble depriming crimped brass so I look for uncrimped brass.
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Originally posted by MadHatter View PostYeah, a lot of people miss this.
16" barrel on both, the 6.8 has the edge out to 500 yards.
If you're a paper puncher, the Grendel is probably in your best interest.
Hunting scenarios, the Grendel has no advantage other than a slight increase in SD.
The 6.5 needs a longer barrel, but most I see are running short barrels, talking about how superior the 6.5 is to the 6.8.
Here is some good reading on it.
https://thebiggamehuntingblog.com/6-...s-6-5-grendel/23002200 fps (edit: had to go double check) out my 12.5" with 123 ssts.Last edited by sir shovelhands; 03-02-2021, 09:07 AM.
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Grendel! I have a hardened arms 24" bull barrel that is a tack driver with factory ammo. I just changed barrels to a 18", and after I changed the gas block and handguard, I should have just bought a complete upper. Absolutely love my grendel, hogs, coyotes, skunks, even my 10 pt this year. Awesome caliber.
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I’d say 6.8 or 6.5 grendel for fast flat shooting rounds. I don’t have personal experience with the 6.8 but my 16” grendel has flopped 95% of hogs I’ve shot using 120gr eldm.
You could also go with the 350legend/450 bush/458 socom for a heavy hitter but you loose the range of the others. My 458 flips them pretty good using 325gr ftx bullets.
Also don’t pass up the good ol cheap 7.62x39
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Originally posted by rebelbow View Postalso check out wilson combat 300 hamr
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Originally posted by sir shovelhands View PostI disagree about the grendel needing longer barrels, I get a bit over23002200 fps (edit: had to go double check) out my 12.5" with 123 ssts.
24" grendel sst123 muzzle 2591fps energy 1833
100 yards 2424fps. energy 1609
12.5"grendel SST123. muzzle 2210fps. energy 1334
100 yards. 2061fps. energy 1160
24" has almost 40% more energy at 100 yards
12.5" grendel is just about the same as a 16" 300 blk .
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