actually, the 338 caliber is HAMPERED by the use of the 338 case UNLESS you stick to the LIGHTER LOADINGS- a PROPERLY CONSTRUCTED bullet in 338 weighs between 225 and 275 grains and up to 300 - and NEEDS 338 WIN MAG VELOCITIES to make it perform- your 308 bullet is good up to 220 grains in an 06- that's about 3/4s of a 338- the WAY I LOOK AT IT IS THAT THE 308/180 is PERFECT FOR MOST NORTH AMERICAN GAME, and if you REALLY need that long heavy shot, you 1) NEED to stalk CLOSER or 2) switch to the 338 win mag, so you have LOTS of power when you get downrange- the 338 federal et al is just a GIMMICK to sell MORE EXPENSIVE BULLETS- ie you can't get 338 in bulk- if you light ;load the 338, it becomes nothing more than an EXCELLENT DEER rifle- and FEDERAl HAD to come out with an answer to the 358 WINCHESTER