Nop.
Best rushing account for 1 def low level (40-70) is done with a granite maul build.
Stats:
Attack: 50
Strength:50 - 99
Defense:1
HP: Try to keep 5 below your combat level for best results
Prayer:13
Range: Not really important, but you can get it up if you want, highest being equal to your magic.
Magic: 70,82,94 Ice blitz and ice barrage work best.
Method:
Cast Ice burst/blitz/barrage, then run up to them and 3 hit them with maul. If done right all three maul hits will stack as one attack.