Yes !!! A proper 300. Up there with Joe Velo and the others in the 1960's, etc. In those times all the balls were effectively 'House Balls', except that the grip actually fitted your hand. - well, reasonably - depending who drilled it.
Anyhow, you can really say that you bowled a 300, the ball didn't do it for you
Not the first with a house ball though. 1979, Joan Bell, on a 157 average, in a 5 person team, bowled 300 with a 10lb. houseball. She won $2000, and the Centre gave her the ball.