Considering of buying a LAR Grizzly Mk V 50AE with a 44 magnum conversion kit(uses same slide as 50AE) and having the barrel reamed to shoot 429 DE magnum rounds(factory loads 210/240 grains). What are your opinions about this?
It's going to boil down to a cost/benefit for you. I'm not familiar with the 429 DE so I couldn't say. Between having both the 44 and 50 barrels though your money might be better spent on ammo and training. I had a 50 ae a couple decades ago and it was a cast-iron bitch to shoot without flinching