Don't wish to start a fight, but I'm going to respond to this thread that I sorta 'stumbled' across. Despite it being an older thread, it deserves to have this information added to dispel the 'WEAK' toggle link MYTH, that seems to have endured for 140 years, as the 'proof of strength' never received the same publicity as the myth......but then, what's new with the media, in that regards. As is often the case, someone 'reads' an article, then repeats it, until it becomes accepted as fact. What happens when the article is wrong to begin with? Too late, to undue the damage, the truth becomes known, but...….here's a shot of truth....for those willing to embrace it!

I'm going to copy and paste a portion of the excellent research by William Hockett detailing the actual results of testing on the so called 'weak' toggle link action, but for the sake of some brevity, a bit of condensed history on the MYTH of the weak toggle link action. After lab testing proved the toggle-link was not weak, some research was done into the so-called 'failures' of broken toggle links. In virtually every case the 'failure' was not the result of firing any ammunition, but the result of the toggle link being abused...….such as trying to force ammunition, that was loaded beyond the maximum overall length, or dirty actions, that users had tried to force into operation. Tests proved that when locked into place, the toggle-link action had no operational weakness. But the damage was done by the publicity of writers who had absolutely no knowledge of what they were talking about, and published second hand (heresay) stories.....in other words, the toggle link action had been 'Borked' by a press, trying to find fault with one of the 'captains of industry'. Once the toggle link was locked into it's 'loaded' position, it was a position of maximum strength, it's only 'weakness' was when it was open and operating...….as ALL actions are. Here are the FACTS about the testing in Winchesters laboratories, as documented and published after the publicity damning them. One should also add, that the newer Uberti reproductions of the 1876 WCF rifles, have an even better engineered and heat treated toggle link action, that makes it even stronger then the original Winchesters. I shoot a 450 gr. Barnes Original JSP with 31 grains of IMR 4198, and have fired several hundred rounds, now the bullets can't be found, but I still shoot 450 gr. cast lead, with 28.8 gr. of 4198, with no ill effect. The longer I use it, the smoother the action has become.....it's a beauty.

FACTS: The Model 1876 is the only repeating rifle that had successful, documented use in the northern plains buffalo slaughter. Earlier repeating rifles such as the Henry, Spencer, and Winchester Models of 1866 and 1873 may have seen limited use, but only the Model 1876 was considered by hunters as powerful enough to do the job against the big woolies. The strength of the Model 1876 rifle and the .45-75 W.C.F. cartridge was tested by Winchester in the late 1870s. The factory conducted tests on the strength and reliability of the action to answer concerns by customers. These tests will astound collectors and shooters who have stated the Model 1876's toggle link action is "weak." In response to a letter sent to the company by Charles Hallock, Esquire, of Forest & Stream magazine, Oliver Winchester responded by telling about the tests the factory accomplished on the 1876 rifle. He indicated that engineers first started the tests by removing one of the toggle links and fired 20 rounds (this was with .45-75 W.C.F. cartridge with 350 grain bullet) with no effect. They restored the missing link then went through 6 more trials starting with a charge of 105 grains of black powder, behind a 700 grain bullet! The comment "worked well" is noted. They then increased the charge of powder to 165 grains behind 3 bullets (1,150 grains) and that "worked well." From there, they increased the powder charge to 203 grains and added more bullets until they reached 1,750 grains of lead (five 350 grain bullets). This also "worked well." Finally, they added one more bullet, bringing the total weight to 2,100 grains, and things began to happen. The comment was, "Breech pin slightly bent. Arm working stiff." The seventh and final test was again 203 grains of powder but this time six Martini bullets weighing 480 grains each (2,880 grains) were used. "The charge bent the breech pin, blew out the side plates, split the frame and otherwise disabled the arm," was the comment. Oliver Winchester noted that in this seventh trial, the shell had burst into fragments and the escape of gas at the breech did the damage.5
The big Centennial model was known for its excellent accuracy and is reputed to have been the most finely made of all the early Winchester lever action rifles.

Now it should be noted, that each of the "6 more trials" stipulated above, did NOT consist of a 'one and done', but were a series of tests involving scores of firings. I dare anyone to try putting a cartridge holding 203 grains of black powder in it, then place 1,750 grains of lead over it on their 'strong' actions, and come up with a result of "works well"!! I'm not saying it can't be done on some actions, but......I don't want to be in the same room with ya.....just send me a note and pictures.