But they got the foreign help:
Bharat Forge signs MoUs with foreign OEMs for indigenous defence production (forceindia.net)
Quote:
"Kalyani Group started with procuring off-the-shelf 155/45mm Austrian gun. Eventually, they created a facility in Pune by importing an entire manufacturing line from Ruag, Switzerland which included tools, fixture, furnaces, etc.
The first artillery gun that they built was Bharat 52, a 155/52mm caliber gun, with a range exceeding 40 km. It was manufactured based on the needs of the Indian Army.
At DefExpo 2020, Bharat Forge Ltd (BFL), signed a slew of Memorandum of Understanding (MoU) and announced strategic collaborations with different global companies for indigenous production."
There is nothing to be shamed of working with foreign companies or start as a screwdriver. The key part is whether the domestic companies start to invest heavily on the supply chains behind the final products: from components to tools, etc. That is what make Japan and China different from other developing countries.