Hollywood veteran Sylvester Stallone has hailed his fourth Rambo installment as the best movie he’s ever made.

The 1980s action hero has once again blasted Rambo III, but insists he’s revitalised the franchise with the movie he’s most proud of making in his 40-year Hollywood career.

Stallone credits his improved work with going back to basics on the latest Rambo movie, blaming much of Rambo III’s shortcomings on the extravagant action sequences.

He says, "Now I think, ‘What a crock of crap that (Rambo III) was.’ Most people like the first one, which was a lot simpler.

"So I learned from that and the new Rambo is more like that. This is the best movie I have ever done and it meant the most to me so far."