Originally Posted by elkaholic
It probably "is" reaching higher pressure to get equal velocity with the 300WM!
I agree. Peak pressure's probably up to or higher than proof load levels; especially when only 5 loads per case is all you get. One can get 30 or more reloads per .30-06 of .270 case with proper resizing tools/techniques and safe max pressures.
I have never thought that cartridge performance comparisons are realistic when a commercial cartridge at normal, safe SAAMI maximum pressures versus a lesser capacity wildcat round with the same bullet requires unsafe way too high pressures to equal it. When one tilts the otherwise level playing field to reach their agenda, then of course their side of the issue will appear to the ignorant that it's a better way to go. Such is the marketing tactics of snake oil peddlers over a century ago.
Rich, had you put some actual pressure numbers or info to that effect in your .300 Sherman information, that would have helped. At least it would make visible the compromises one has to make when using smaller capacity cartridges to equal the performance of larger ones.
ctbreitwieser, now you get to decide what's best for your objectives and well being. You get to decide the margin of safety you want to live (shoot?) with.