Military 30 caliber data

[Larryjk]

In the "Cartridges of the World" book, the military loading data shows 50 grains of IMR4895 with the 150 gr. bullet. It also shows 50 grains of IMR4895 for the 173 grain bullet. Are both loads safe to use in an M1 Garand without risk of hurting the operating rod with the 173 grain bullet? I would like to use some of the 173 grain loads at 600 yards if they won't damage the rifle. The "Guard" used to use the 173 grain load at the National Matches for longer range shooting with the Springfields but I haven't heard of the use of this load in the M1 Garand. Any experience with this load?