44 magnum bullet speed


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swiss 210
October 6, 2005, 09:08 AM
has any one ever used privi partizan rounds ??I would like some one to be able to tell me if these rounds are near max charge there 180gn is going at about 1800fps this is about as fast as a 454 casull is it not??Are these going to destroy my 629 should they only be used in rugers??!

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Old Fuff
October 6, 2005, 09:28 AM
I have not tried the ammunition you describe, but driving a 180-grain bullet out of a .44 Magnum revolver at a true 1800 FPS would involve pressures that I woundn't care to use in a Smith & Wesson model 629. While it probably would not destroy the gun, it would eventually loosen it up and cause cylinder end-shake, which is an undesireable condition.

YodaVader
October 6, 2005, 03:15 PM
What barrel length did they use to achieve the 1800 fps with the 180 load?
In the Hornady manual I have they list a top load at 1700 fps with their 180 XTP out of a 7.5" Super Blackhawk. Not sure what the speed would be out of something like an 8 3/8" 629.

swiss 210
October 6, 2005, 06:18 PM
if you go and look at there web page thay show 550mps !and thay say that thay are within sami limits so i think this is not right s&w say you can shoot all munitions that are marked with sami but in the same time they say that 1108 is about the limit for a 629 now that is the speed of a magtec 240gn!!! :confused:

Ben Shepherd
October 6, 2005, 07:58 PM
That speed CAN be acieved within SAMMI specs. HOWEVER: It will be VERY hard on your forcing cone.

And if you sight for this one "special purpose" load, any "standard" load will be way off.

Just a couple things to think about.

MachIVshooter
October 7, 2005, 12:44 AM
180gn is going at about 1800fps this is about as fast as a 454 casull is it not??

No. A moderate .454 load pushes a 240 grainer at 1900 FPS. Full .454 loads will drive a 240 grain slug at over 2000 FPS from a 7.5" tube.

My top .44 mag 180 grain loads from a 5.5" Vaquero achieved 1465 FPS. Add a couple inches of barrel and it should be about 1550 FPS. That is a max load with H-110.

Stainz
October 7, 2005, 08:35 AM
I believe that the 180gr SJHP UMC .44 magnums are rated at 1,600+ fps. A range-mate insists that he has chrono-ed them at 1650+ fps from a SBH. I recently shot a few from my 4" 629 MG - testing the new .500 Magnum Hogue backstrap-enclosing grips. So-equipped, it was highly shootable, albeit the muzzle rise was significant. My new 6" h-l 629, sporting those .500 Mag grips, was far better, with much less muzzle rise. Still, I prefer lower speed - and heavier - rounds... 240-300 gr; clad FP's, etc, at 900-1,000 fps is my 'idea' of a .44 Magnum.

Incidently, I chrono-ed my favorite .454 Casull 'thumpers' from my 7.5" SRH - those 240gr Hornady XTP's - and got 1,985 fps - yielding just less than 2,100 ft-lb KE -pretty substantial. Oddly, my .45 Schofield 'mild' loads, 200gr LRNFP over 4.5gr Titegroup for 700fps, make the same size hole in a piece of paper... sure don't 'ding' the plates as hard, of course!

Stainz

zeke
October 8, 2005, 10:03 AM
Have chronoed Remington's newer 44 mag 180 gn sjsp at 1900 fps from a 7.5 inch Bisley, and 2100 fps from a 16 inch Marlin. Thinking something was wrong, had a friend chrono same load using his chronograph and a 10 in Contender. He got about an extra 50 fps over the Bisley.

The 180 grain load induce a serious flinch, after only 12 rounds and am saving the rest for the rifle.

Hodgdon's 2004 annual manual lists a max 44 mag H110 load with Hdy 180 xtp at 1896 fps from 8.2 inch barrel and under 30,000 cup.

Have never chronoed the older 180 gn sjhp factory load.

harmon
October 8, 2005, 10:44 AM
a 7.5 inch NON-VENTED pressure barrel will always give higher velocity than a 7.5 inch revolver barrel.
i also doubt that the load will actually make 1900fps in anything but a 10 inch contender...or longer.
buy some of it and chrono it.

swiss 210
October 8, 2005, 11:11 AM
Ok looks like there seems to be one or two factory loads going about 1800fps or there abouts.The remmingtons that were mentioned were marked on the box at which speed? Thay are also sammi spec though this does not seem to mean much so to cut a long story short over 1200fps is a big no no for my lovely 629 :confused:

BluesBear
October 8, 2005, 04:25 PM
Raw muzzle velocities and chamber pressures do NOT have a linear relationship.

You simply cannot say whether a certain caliber will have safe or unsafe chamber pressures based on muzzle velocity alone.
:banghead:

You have to factor in things such as bulletweight, bullet composition, bullet shape. All 240 gr bullets are NOT created equal.

What powder is used? Many factories use a blend that is NOT available as a canister grade to reloaders. So it is quite possible for a factory to achieve higher velocities with lower chamber pressures than us mere mortals can.

Barrel length is, of course, VERY important. As is bore diameter and chamber dimentions.

And don't forget temperature and location. The same load fired in Tuscon in August will behave differently when fired in Prudhoe Bay in February.

g_gunter
October 13, 2005, 03:44 PM
The corbon 180 gr. cartridge is rated at 1700 fps and it feels it out of my 629.

g_gunter

swiss 210
October 14, 2005, 03:49 AM
The corbon 180 gr. cartridge is rated at 1700 fps and it feels it out of my 629.

g_gunter



How many have you 180 corbons have you shot at that speed??
What has it done to the forcing cone?
Have you started to get end shake yet and what other munition do you feed it my 629 is also a pp i love this gun!!!!:rolleyes:

Master Blaster
October 14, 2005, 10:05 AM
Personally I dont fire loads like this from handguns I own I have a .308 rifle that will best that performance. I would not fire it from my Super Blackhawk, My Redhawk or my smith 629. why not?

I dont hunt deer with it but if I did I would go with a heavier bullet at a slower speed because I cant see more than 75 yards clear around here where I could hunt. I dont shoot at silouhettes at 200 yards either.

The guns can take it, my wrists can take it for a while, but why put extra stress on either???? These loads are not fun to shoot, and a 240 grain bullet at 1000 fps will take care of any social situation I may run into, and then some.

JMHO YMMV

zeke
October 15, 2005, 09:42 AM
Master Blaster-Am certainly mostly in agreement with ya. Have a 629 Mt Gun that i tried some factory 240 grainers in once (only about 3 rounds). Ain't likely to happen again. All my full bore 44 mag loads are used in a 16 in Marlin. For short rifle purposes, Remington's newer 180 sjsp ougt to offer a slighty flatter trajectory, with a bullet better able to withstand the velocity generated, than most lighter jhp's.

Am still keeping one Ruger 4 5/8 45 LC Blackhawk sighted in with Corbon's 300 grain jsp hunting load (bout 1150 fps from 4 5/8), however. It has a set of Pachmeyer rubbers on it and is carried during deer season (companion to hunting rifle). Haven't been smart enough to handload some 250 hard casts at milder velocity's , yet. Am also not exactly anxious to work up max heavy weight loads for it either. While the pistol certainly could take it, i wouldn't find any pleasure in it.

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