When you bought your N140 they included a free VV load data book right?
Also, plenty of VV recipes available in a lot of bullet specific reloading data books.
You can pretty-much use any 62 grain FMJ load data from reputable source material to load your bullets but, as already recommended, start low and work-up. Double check with the manufacturer for any max velocity recommendations.
Also, you might wanna watch a few of Johnny's Reloading Bench YouTube videos ... he's got an entire series on 62 grain fmj bullets and one of them does include N140.
N140 is an outstanding propellant btw. I'm out of it and I'm jealous. Been trying to get more since I ran-out last July. Need more N133 as well. All of VV's offerings are outstanding ... they're just so darn expensive and hard to come-by.