I'm curious; has anyone here shot a 577 Tyrannosaur? If you shot it once, would you shoot it again? Would you take it hunting? Would you shoot it again off the bench for groups? Would it be possible to put a scope on one and not have it put your eye out when you shot it?

I have had the growing desire for one. Do not know why

Ed

I know there are more than a few and hope that they will chime in but I dont see why it would be any different than my 600 OverKill or dad's 585AHR. Many people here have scoped the 600 OK.Like most who own them, I shoot my 600 a lot.

A lot, maybe most of the bad press the 577T-Rex gets is from the bazooka-like proportions of the A-square rifles it is most commonly encountered in. I still haven't figured how something that heavy can manage to accentuate recoil, and be so clumsy in use. Rifles can be too big to hold onto properly, and that is mist likely the answer.
I shot one some years ago, and passed on the rifle, 30 rounds each of softs and solids and reloading dies for $1600. A friend bought it, and called me two days later wanting to know if I wanted it. Two rounds fired, one bloody nose, and down the road it went.

Rich
DRSS

Would be a mighty fun rifle when loaded to 577 NE levels, personally more bragging rights go to Overkill for the cool factor. The way the caliber war is going, with H&H now chambering 1 700 NE, it wont be long before 2 bores make a comeback using smokeless.

John

I cast my vote for the Big 6 also. With a little help from AHR, I shadetree gunsmithed mine together on an Enfield and it works just fine.

I haven't shot an T-rex but with a properly constructed rifle in this class, there's no reason to not scope it or take it hunting.

This level of power is nothing to be "shooting from the bench" in the conventional manner but that doesn't preclude shots from supported positions.

http://forums.accuratereloadin...741092801#3741092801

I dont want to scope my 577 Tyrannosaur, with NE loads then ok, but with a 750grs/2600f/s or 800 grs/2500f/s I dont dare.. And I dont like scopes in the forward position, then I much prefer good irons like the ghostring I have on mine..

I fired Saeed's .577 T-Rex when I visited him in Dubai.

Recoil was stiff, but nowhere near as bad as the "champions" videos would have you believe.

George

Remember Mitch Carter's 577 Tyrannosaur?
Mitch was a founding member of this site.
He has since bought a Corvette and moved to Florida.
Hi Mitch!
It weighed 14 pounds with a Leupold 6X M8 scope.
It had a KDF muzzle brake too.
I fired over 40 rounds through it, about 13 shots per sitting at the bench.
It was capable of 1/2 MOA accuracy for 3 shots at 100 yards in a Long Island indoor range.
The muzzle brake does nothing for the torque, but it certainly helps with recoil when you are burning about 200 grains of powder.
The 1:12" TWIST Pac-Nor barrel handled 750 to 900-grain bullets very well.

The 577 Trex does seem passe, now that the 600 OK is on scene.

Trex are for kids.

I have fired a .577 T-Rex, .585 Nyati, Developed the .585/.600Ok and the .600OK. Getting T-Rex brass is a nightmare and most of it was A square produced and not very good. Good luck finding brass today. The .600Ok outperforms the TREX with 750 gr bullets by a wide margin and with 900gr bullets the Trex is totally outclassed. In addition, I had major issues with its inventor Art Alpin and would not touch a A squared product again if you gave it to me. There is Nothing a Trex can do that

I've shot the 585 AHR and 600 OK. Both the rifles were built by American Hunting Rifles, and were beautiful rifles. Fit, finish, and balance is flawless.

These were the first big bores I have ever shot. The rifles weighed in the neighborhood of 14lbs I'd guess, and had muzzle brakes the size of beer cans on them. (I was told not to shoot them w/o the brakes) The recoil is more of a long shove or push, not sharp like a 300 mag. I really injoyed shooting them off hand.

The AHR stocks are excellent in geometry for recoil too. Grab em and pull them in tight against the shoulder, and you shouldn't have a problem.

As was told to me: "You really don't want a scope on this type of rifle. These rifles are designed for tuskers and buff, and most of the shots are going to be in thick brush less than 50 yards."

I'm on board with RGB here, on all counts. That said, I am hoping forum support here will get the 585 Hubel Express off and running.

Rich
DRSS

Reg the 577 TRex brass is easy to get from Dieter Horneber. I have experienced no problems and quality is excellent.
The 577 TRex works well for me, havent tried the 600OK (yet!!)
Penetrationwise the 577 TRex is surprisingly good - even as good as the 416 Wby in my tests (those are the two best penetrating calibers I have ever tested).
Think honestly the 600 OK is in the same class, The 900grs is a bit bigger/heavier but velocity is lower. Theoretically a .585" 800 grs bullet at 2500 f/s will penetrate better than a 900 grs .620" at 2350-2400f/s (both bullets have similar sectional density). The 600 might have the edge in extra punch/stopping power though. But that is splitting hairs for sure..
Not that I like Art Alphin and his products, but I think the 577 TRex is a good design and it works very well (with good quality brass).
Cheers
Ulrik

Buffalo- Apparantly Horneber brass is extremely difficult to import into the US right now. No one seems to want to go through the hassles. I have not tried importing brass for years from europe and Huntingtons has stopped also. With 750gr bullets you can beat the trex by a fair margin in the .600Ok. I've seen nearly 2900fps. As I remember you have a Improved Trex design That delivers more oomph than the std case. Still think the Hannible rifle is a ABORTION though -Rob

quote:

Originally posted by Robgunbuilder:
Buffalo- Apparantly Horneber brass is extremely difficult to import into the US right now. No one seems to want to go through the hassles. With 750gr bullets you can beat the trex by a fair margin in the .600Ok. As I remember you have a Improved Trex design That delivers more oomph than the std case. Still think the Hannible rifle is a ABORTION though -Rob

Maybe not quite as bad as the 700 NE by H&H.

John

Rob, have you necked the .600 OK down to .577?

I would think that that would beat the T-Rex in spades.

mrlexma- Fritz454 and I made .585/.600OK's years ago and it worked fine but it just didnt turn me on.I told Ed Plummer of AHR at the time that he was free tocommercialize it if he wanted to and he did just that. CCMDOC has one and likes it. I found a 750gr bullet in the .600Ok could be driven over 2800fps in fact I got nearly 2900 out of it and was very satisfied. You can see a picture of that bullet on CCMDocs thread about his shooting trees. -Rob

Holy Smoly!! 750 @ 2900fps, according to Norma is 14,000 ft lbs of energy! (at the muzzle)

KERWAAP!
PH: "Rob, I thought you were shooting at a buffalo?"
Rob: "Yes."
PH: "Well, what happened to it?"
Rob: "It was right where that big "grease" spot is."
PH: "Hmm, maybe it is the "grease" spot?!?!!"
Rob: "Are "grease" spots counted against trophy fees?"

quote:

Originally posted by Robgunbuilder:
mrlexma- Fritz454 and I made .585/.600OK's years ago and it worked fine but it just didnt turn me on.I told Ed Plummer of AHR at the time that he was free tocommercialize it if he wanted to and he did just that. CCMDOC has one and likes it. I found a 750gr bullet in the .600Ok could be driven over 2800fps in fact I got nearly 2900 out of it and was very satisfied. You can see a picture of that bullet on CCMDocs thread about his shooting trees. -Rob

Left most is Rob's 750gr hole-puncher.



And here is the 585AHR between a 600 OK on its left and 45-70 on its right (and 700AHR far left)

I didn't realize that the .577-.600 OK was the .585 AHR.

I like the looks of the .585, but I see your point on the .600 with 750 grain bullets.

Rob or CCMDoc, I imagine that it's pretty easy to get 2,500 fps with a 750 grain bullet in the .585 AHR, right?

That would be a great elephant load.

Mrlexma- Its extremely easy to get 2500fps with the 750gr super penetrator bullet shown above. I found quite a few powders that would do that. The ball powders always seem to give the highest velocities though just as predicted. Penetration has to be seen to be believed.
As for Buff becoming grease spots, nice visual, but more like stem to stern through and throughs. I make that same bullet out of 360 alloy copper and it expands reasonably well and will punch a 1" hole through most game creating the "garden hose of Death".-Rob

What I would find interesting is a beltless 585 AHR. (Just a matter of taste)
Anyone know the rim diameter and casehead of the 700 AHR?

It gets old when every thread here on .585 and above calibers gets turned into a thread on how the .600 OK is a better choice.

quote:

Originally posted by KennethI:
It gets old when every thread here on .585 and above calibers gets turned into a thread on how the .600 OK is a better choice.

Dont really see where that happened in this thread. I have both a 585 and a 600, like 'em both just fine. My own comments were that I shoot the 600OK (and I guess for Grumulkin and your sake should have added the 585AHR) regularly so the T-Rex should be just as "shootable".

Somebody neck that 700 AHR to 600 for fun please
It could have over 30 thou shoulders and you could skip the belt