I have used the 125 (now the 130) a lot with great success, but that was on deer not elk/moose so take it for what it's worth.
The only Grizzly that we've had negative feedback on was the the lightweight green one, now called a 115, so we no longer carry them. The rest are good to go IMO.
Food for thought, if I were going to set a screw in Grizzly up at around 200 grains I'd lean towards a 160 on a long Magnus aluminum adapter over using the short steel adapter on the lighter head.