Winchester recognized the quality and ingenuity of Browning's single-shot rifle design and began mass production, marking the start of their formal collaboration. This partnership established Browning's reputation on a national scale.

Browning designed the Winchester Model 1886, a powerful lever-action rifle chambered for large-caliber cartridges. This rifle solidified Browning's expertise in lever-action designs and was a commercial success for Winchester.

Browning designed the Winchester Model 1887, a unique lever-action shotgun. While not as widely adopted as pump-action shotguns, it demonstrated Browning's versatility in designing firearms for various applications.

Browning designed the Winchester Model 1893, a pump-action shotgun, which served as a precursor to the improved and more successful Model 1897.

The Winchester Model 1894, also designed by Browning, became one of the most popular and enduring lever-action rifles of all time, chambered in cartridges like .30-30 Winchester. Its enduring popularity made it a symbol of the American West.

Browning designed the Winchester Model 1900, a bolt-action .22 caliber rifle. This shows he wasn't limited to lever-action rifles, and could also design more common small-bore rifles.

Growing disagreements over royalties and the long-term control of Browning's designs led to a strained relationship with Winchester. Browning felt that Winchester was not adequately compensating him for his inventions and ultimately decided to end their collaboration.