Marine Cpl
.577 Tyrannosaur.
instead of Green Tip 62 great Penetrators.
Why you should use 55gr...
- Thread starter Marine Cpl
- Start date
I use it because it's cheap, flat and accurate.
Marine Cpl
.577 Tyrannosaur.
Did you see the video. Massive wound difference. The 55 grain is what the AR15 was designed for.
But muh Gold Dots!
Seriously though, I love the 55gr loads for plinking but for serious use I got lots of them Gold Dots and 77gr OTMs.
But if one need to stockpile a SHTF stash in hurry bulk M193 would do alright by you.
Just don't expect it to do much through barriers.
ArmedCorgi
.475 A&M Magnum
Could it be that since 62gr is meant to go through armor it is not as effective on flesh?
M855 doesn't pen armor very well, nor does it even do very well through barriers.
It was originally intended to increase soft penetration at longer ranges than M193 for machinegun use.
Marine Cpl
.577 Tyrannosaur.
That's correct. The 62 gr Penetrator was originally designed for the m249 saw. It was later issued to the M16 for logistical reasons.
ArmedCorgi
.475 A&M Magnum
Nor does it seem to do much damage on flesh according to that video. So what would you say it does here?
ArmedCorgi
.475 A&M Magnum
But wasn't the 62gr the reason the military switched to a 1:7 twist rate over the 1:9?
You can buy a lot of it for cheap. That's about it.
But then you can also buy a lot of M193 for cheap too.
Marine Cpl
.577 Tyrannosaur.
I think so. @Podmonkey ?
ArmedCorgi
.475 A&M Magnum
And to think the AFT wanted to ban this ammo...lol
Not really no. The original M16 twist rate was 1:12 which works fine for 55gr bullets. The move to 1:7 was originally for use with the heavier tracer rounds. The military never adopted a 1:9 twist.
ArmedCorgi
.475 A&M Magnum
So 1:9 was for the civilian AR15 then?
ArmedCorgi
.475 A&M Magnum
1:12 out of a 20"+ bbl?
Yes. And I looked it up, the Military has both the M196 tracer which at 54gr is compatible with 1:12 twist and the M856 tracer which at 63gr shoots like the M855 round. So I infer from that the move to 1:7 was for the M855 cartridge.
However 1:9 twist barrels can stabilize bullets up to 69gr.
That was the M16A1 spec yes. I think the earliest AR15 iterations used a 1:14 twist barrel. Quickly dropped for the 1:12.
@Willjr75 gotta get some of them 185 gr 9mms... Seismic Ammo
Marine Cpl
.577 Tyrannosaur.
I don't do hollow points brother.
This thread is kinda a flawed premise though.
One of the great advantages of the 5.56/.223 is the huge variety of projectiles and loadings available. The AR15 user can tailor the cartridge used for the specific purpose needed. That is why I stock 3 loads in my 5.56 supply. M193 or 55gr in general for plinking, with the Hornady 55gr HP Match for our E matches, 64/62gr Gold Dot soft points for HD/SD use and the 77gr mk262 clones I reserve for precision target work
and primarily for use with my Recce carbine. Once it is scoped that is.
One of the great advantages of the 5.56/.223 is the huge variety of projectiles and loadings available. The AR15 user can tailor the cartridge used for the specific purpose needed. That is why I stock 3 loads in my 5.56 supply. M193 or 55gr in general for plinking, with the Hornady 55gr HP Match for our E matches, 64/62gr Gold Dot soft points for HD/SD use and the 77gr mk262 clones I reserve for precision target work
and primarily for use with my Recce carbine. Once it is scoped that is.
Marine Cpl
.577 Tyrannosaur.
I think for what we as regular Joe's will be shooting at at normal ranges, the 55 grain is superior. The 50 grain TSX hollow point is even better.
Yes. Yes we do.
Marine Cpl
.577 Tyrannosaur.
Only for rifles. In pistols they don't do squat from the research I've done.
Flattest trajectory out to 300 yards. But it gets pushed around by a cross breeze badly. 77gr is good for that.
Marine Cpl
.577 Tyrannosaur.
You don't think that a lower grain for home defense would provide the greater velocity to do more damage? I mean that's why a 5.56 does more damage than a .308 at close range. Velocity. High velocity destroys more tissue than lower velocity.
Marine Cpl
.577 Tyrannosaur.
300 yard and beyond shots aren't really realistic don't you think? Unless you are in Afghanistan shooting mountain range to mountain range.... By us it'll be a hundred and fifty yards or less.
I disagree with your assertions. A 12 gauge slug does horrendous damage to soft tissue. A 45/70 can reliably take down Bison, a 5.56 can't.
Given the same bullet construction a .308 will cause more tissue damage.
Keep in mind a 14xgr m80 ball projectile is more stout than a 55gr M193 ball projectile so it won't fragment as readily. A lightly constructed, fragmenting 7.62/308 would do even more damage. The newer 130gr M80A1 round for example does a fearsome number in soft tissue and through barriers.
Marine Cpl
.577 Tyrannosaur.
Well that's extreme grain with those examples. Much larger bullet. The 55 grain vs 62 grain is the same diameter. Both will go clean through a person in most cases. With something like a bison you need the extra grain for penetration. Not so on a human with 5.56. The greater the velocity, the greater the stretch cavity.
The video above proved it.
The idea behind the Recce carbine is to have something can be effective under a wide variety of circumstances. Up close against soft targets it's very effective, at extended range it's still effective. I don't consider the Recce carbine to be my go to SD rifle. It's my Paul Revere has ridden down the street rifle. Or my SHTF rifle.
Might need to engage at further range in such instances. In the Paul Revere case, ambush from range would be my preferred engagement.