Originally Posted by
John Hanley
^ we occassionally have to use %s to talk about prescribed loads, but it's really a ballpark suggestion (especially considering that - fresh off LP - a 1rm is a bit of a silly notion (you don't have a stable 1rm and you won't for quite a while). That said, you can certainly calculate an estimated 1rm based on your final LP worksets (divide the load you used by 87%). This will work fine for determining a starting weight for VD.
If you really want to test your 1rm, I would follow a PL meet protocol. 3 attempts at 1) squat, 2) bench, 3) DL. For 1st attempts on each lift, I'd use ~110% of the weight used for your final LP worksets (maybe 105% for DL). I'd jump up about 5% in load from each successful lift (ie if you get 400 on attempt 1, try 420 attempt 2; if good at 420, try 440ish for attempt 3).