Originally Posted by GeoW
Originally Posted by Just a Hunter
I just have a hard time buying the old rifle so have to keep it loaded down argument. The 30-06 is about the same age and is a 114 year old cartridge yet is loaded to 60,000 psi I believe. Same with the .257 Roberts. I am pretty sure It came out about the same time or after the 270 Winchester which if memory serve is loaded to 62,000 psi.

I can see not wanting to stress a M99 so maybe there should be loads for certain guns like there are for the 45-70 and 45 Colt when it comes to the .250 Savage. Also, unless there are pressure spikes in the .257 Roberts like there is reported in the .243 Win. than it should be modernized too.

I know a bit off topic from the OP, but that ship sailed before I got here.


Metallurgy and mechanism design..


Quite to my point. The same metallurgy and mechanisms were available to all these cartridges yet some are loaded down because of the guns and some aren't.