Cracked forcing cone on colt

I have this nice old colt da 38 with one major problem. But magnum pressures were still hard on the design parameters, and the cracked forcing cone issue was further aggravated by the increasing. Perhaps the front of the cylinder was too close to the forcing cone. My personal experience with the same includes a cracked forcing cone on a 1957 python, and a broken bolt on a 1976 python. Nov 10, 2018 the alignment of parts in a revolver is called timing. Jul 30, 2016 i have this nice old colt da 38 with one major problem. Light grey patina overall, with pitting on barrel, lever, and cylinder, cylinder scene faint but visible, mainspring broken, lever latch a replacement, left cartouche faint, right cartouche at visible, hammer screw broken, barrel with cracked at forcing cone. Gun was supposed to be unfired when i got it and it looked it. The barrel might have a cracked and chipped forcing cone, but the. May 10, 2020 a friend of mine has a problem with his ruger.

I watched episode after episode of the series with my grandfather during weekends, and i remember when i was six years old, he bought me a toy revolver. Such larger bullets will swage down in the forcing cone of the barrel and within the limits of the bullet alloy, shoot accurately and will not lead. Forcing cone split on the second box of federal 158 grain jhp factory magnums. It did a amazing job and improved the guns accuracy especially with lead bullets. Originally posted by iowegan just for grins, i ran the ops load through quickload. If anyone knows about the smaller parts that were replaced, i would love to hear about it. Cleaning my 6 stainless gp100 a few days ago and noticed that the forcing cone was cracked. Dec, 2010 cracks in the forcing cone cannot be fixed. I had a gp100 that did the same thing, and now a super blackhawk. I am the original owner of this pistol, having been given to me in high school about 1982, its a model 194. My source is a friend who gave me an army special w cracked forcing cone. I realize that this question may have been addressed before, however, i have not located it as of yet. The new 66 features a blackoxided hammer, trigger, cylinder release and screws. Some gunsmiths will attempt to save a barrel with a cracked forcing cone by setting the barrel back, but this almost always fails, and the crack continues to spread forward.

The forcing cone is located at the breech end of the barrel, immediately in front of the cylinder. And i dont think i can legally purchase any colt python copies like the. If youre interested in how this happened, then please read below. Cracked forcing cone page 2 the firearms forum the. To try and shorten turnaround im no longer working on lever guns or any rifles or shotguns. Yes, i would like to attempt this myself and will need to know which tools i would use to. Hello gunsmiths, i have a colt 1917 revolver with an issue with the forcing cone. However, i became a bit disenchanted with it following a few lessthansatisfactory hits on geese. The vast majority of colt vspring revolvers i have owned fail to carry up the cylinder fully under braking. Doubleduty reamers lengthen short chambers to modern standard or magnum lengths and cut the new long forcing cone at the same time or will cut a long forcing cone without lengthening the chamber for the gunsmith seeking improved shooting performance for his customer.

Also i believe the cracked forcing cones are from high round counts through revolvers and again lack of cleaning them. Cracks usually occurred at the forcing cones 6 oclock position. Ive considered having it rebarreled, but when it comes to handguns im. However, the 125 grain ammo is the most effective and was the favorite of police. They even have the colt fulllength barrel under lug and a rib on top.

How is a cartridge in a revolver perfectly aligned with. The k frame magnums have a flat section of the forcing cone that is prone to cracking with the use of hypervelocity lightweight 357 magnum ammo such as 110 or 125 grain. The alignment of parts in a revolver is called timing. Although many recut the forcing conr to 11 as a custom modification and most cases has little significant improvement to the gun. The exact way timing is achieved depends on the specific revolver design. Pistol smith needed, colt 38 army special 24hourcampfire. Dont know if a rn bullet really delivers less stress to a missaligned forcing cone or if it just delivers that stress a little farther forward which is ok as the rocing cone tapers and is thicker farther forward. Also, i have even heard of an example where a new unfired revolver was purchased with a crack in. Kframe left size requires that the bottom of the forcing cone have a flat milled on it to allow clearance for the frame yoke. The area between the forcing cone and cylinder is known as the lock up.

Never seen one shot enough to stretch the frame or knock it out of time, that on almost 50 years as a pistol smitharmorer. So if you knew of barrels of different models that may fit, please let me know. If you have a cylinder to bore alingment problem than the forcing cone takes it hard. Some have suffered cracked forcing cones and flame cutting of the topstrap. Oct 27, 2015 if the forcing cone cracked, it could have been due to excessive pressure during firing. Well i ended up with cracked barrels and uberti doesnt send many barrels for parts over to the us.

I get some serious lead buildup around the forcing cone and the also the top strap. Highest quality gunsmith tools, including revolver forcing cone cutters at pacific tool and gauge. For example, could you shoot hot 125gr 357 mag loads in a model 619 l frame or a model 28 n frame, or hot 185gr 44 mag loads in a model. The cylinder gap is also not even but is nothing like this problem. The following is a list of some of the more commonly used and offered services available here at bozeman trail arms. Ive had this pistol for a number of years, but i would prefer to have a 734 barrel on it.

As above, the ammo that causes the most chance of a cracked forcing cone is the hot 125 grain hollow points. I recently cracked the forcing cone on my k 194, yes, it was from a 125 gr. Lengthen forcing cones to improve patterns, reduce recoil. Most of the cracked forcing cone reports came from the days when. No matter how much scrubbing with hoppes, it is a pain to remove. Forcing cone crack 2nd update from mri singleactions. Can you fire a modern bullet not cartridge out of a cap and ball revolver. Especially the 19 that i can feed all the magnums i want and not worry about cracked forcing cones. I kept it unfired for almost 10 years before shooting it. Colt army special value the firearms forum the buying. May 14, 2016 my personal experience with the same includes a cracked forcing cone on a 1957 python, and a broken bolt on a 1976 python.

I never saw any damage to my python forcing cones, and usually only saw any erosion on pythons that were shot with often silly hot loads. Rightly or wrongly, these loads became associated with cracked forcing cones. It just has alot of miles on it only other thing that causes split forcing cones is excessive pressure. Do know that many of the older revolvers that onwers have brought to me as blown had a cracked forning cone and were out of time. In summary, the issue with the k frame magnums is not the width of the barrel. So i decided to create a list of what i think are some of the best. Cracks in steel tend to continue to spread, even if you cut the cracked end off, since cracks are a sign of metal fatigue caused by blast damage. This whole thing about modifying forcing cones is all about how gradual a taper this funnel should be. Then i have to take the revolver apart, pull the barrel, weld up the forcing cone, re cut the forcing cone on the lathe, and then put it all back.

I usually shoot my blued vaquero quite a bit 7501k rounds a year. For example, could you shoot hot 125gr 357 mag loads in a model 619 l frame or a model 28 n frame, or hot 185gr 44 mag loads in a model 629 also n frame without any concern. We lengthen the forcing cone to 3 inches and and finish it with a mirror polish. My beloved sw model 19 357 developed a cracked forcing cone yesterday. I did ask them to check the timing and to give it a solid once over, and this is what they replaced. The only way to fix a cracked forcing cone is to replace the barrel. Lots of them hit the used market as police departments made the switch to strikerfired. I have fired this colt and it performed beautifully, except the dragon breath off the side, and i am wondering if i could fix this issue. Cracked forcing cone the firearms forum the buying. In that thread i was warned about using 125 grain 357 in it because it could crack the forcing cone. With a cracked forcing cone its much simpler just to replace the barrel.

The area in a shotgun barrel just in front of the chamber that directs the shot load into the bore is called the forcing cone. Cracked at the outside of the forcing cone where it is milled thin to make room for the cylinder bushingin front of the cylinder and intgral with it. The internet consensus, for what its worth, is that one should avoid excessive use of hot 125 and grain loads, but 158grain bullets cause less trouble. Brownells long forcing cone chamber reamer brownells. If that was it, this would be a good pistol right there. The angle to which the forcing cone is cut and the size of the cylinder gap can be a point of many debates. Im thinking that this might be a fun project to swap it out. How is a cartridge in a revolver perfectly aligned with the inlet of the. The fact that only one or maybe two people here has actually experienced or even personally seen a cracked forcing cone is proof of it. The problem in shooting cast bullets in revolvers lies in the difference between the chamber throats and the bore diameter of the barrel. Some gunsmiths will attempt to save a barrel with a cracked forcing cone by setting the barrel. Smith lframe revolvers are the same size as a colt python.

The higher velocity and hot burning powder can cause what amounts to metal fatigue of the rear of the barrel. A lot of this could be the lack of cleaning deposits off the forcing cone. I have thought about this on occasions if i cracked the forcing cone in one of my 19s or the 65 or 66. It can be thought of as a funnel or internal taper at the beginning of the barrel. There is no doubt in my mind that as great as the k frame magnum is the one weakness is the flat spot at the 6 a clock position. One of my favorite shotguns is my benelli super vinci. The only cracked forcing cone on a revolver i have owned was on a nickel, firstyear colt python.

New korth nighthawk 357 revolvers page 4 the leading. The forcing cone is the area that the bullet impacts first after making the jump. Unlike wear, you cannot easily set the barrel back enough to fix a crack. As a matter of interest, ive experienced several cracked forcing cones over the years. The older model has a casehardened hammer and trigger as well as a stainless cylinder release. Aug 02, 2016 a common complaint about the model 66 is that it is not really capable of handling a steady diet of. This is a discussion on cracked forcing cone on gp100. While well within 12gauge specs, benelli bores tend to run a little on the smallish side and i reasoned that it might benefit from having the forcing cone. It handles fast, shoots faster and puts powerful rounds in tiny spaces far away.

You dont see a lot of them posted because a cracked forcing cone is pretty rare. Anyway the two 45s cracked barrels using the reloads cowboy action loads. Another centerfire revolver, another cracked forcing cone. Its lightweight, points naturally, and is tough as nails. Uncommon outside of magnum revolvers, these cracks result from the high pressure of the magnum ammunition stressing the edges of the forcing cone. Identified as a distinct model within the dragoon family by john j. According to forum such cases are handled quick and painless in usa by ruger. Id like to widen my search for a replacement barrel. I was practicing reloading, drawing, and trigger control and i noticed that something looked odd about the where the bullet leaves the cylinder and enters the barrel. Revolver forcing cone cutters pacific tool and gauge. The function of the forcing cone is to guide the bullet into the bore after it. I rented the forcing cone tool from iowegan and followed his instructions.

Mine works like a clockwork, but problem occured in his gun after shooting about 1700 rounds of regular, factory ammo 158gr forcing cone cracked. Cracks in the forcing cone are common, and contrary to popular opinion, a cracked barrel is almost always toast. One report was received of a colt python that cracked with the first box of 158 grain magnum shells. Different manufactures have promoted the merits of different angles on different firearms over the years. Well i believe it is already cracked on the bottom. As such theres a gap between the cylinder and the rear of the barrel where the forcing cone is. If the chamber throats are too small, the bullets are squeezed down smaller than the bore of the revolver and you will get leading and inaccuracy, in the barrel. Apparently a little area on the bottom of the forcing cone is shaved off in order to make room for the cylinder pin and if shooting lots of magnum rounds or lightweight. I am out of my 1year warranty, so i doubt mri is gonna cover it.

Lframe revolvers willsurprise, surprisefit perfectly in holsters formed for the python. In most production shotguns this forcing cone is very short and at a very steep angle. The vast majority of colt vspring revolvers i have owned fail to carry up the cylinder fully under braking, even if they time properly without any obstructions. The original cone was beat and battered by a cylinder out of alignment condition, and seemed to be pretty shallow. Seen some cracked forcing cones from super hot handloads they were never designed to shoot but never from factoryfactory spec loads. What happens to all of the model 19s with cracked forcing. Pennsylvania firearm owners association discussion forum.