Quote:
Originally Posted by Deer Hunter
Saami spec on the 338 win mag is specified with up to 15 thou clearance between the belt on the cartridge and on the belt cut into the chamber.
And up to 26 thou clearance between the cartridge and chamber at the shoulder.
Other cartridges that headspace off the shoulder only usually have up to 13-14 thou clearance between the Saami spec cartridge and the Saami spec chamber.
338 win mag factory loads fired from a model 70 have grown 25 thou on the shoulder compared to the factory loaded ammo, according to my measurements. You can see the shoulder growth in the picture. The OP had 16 thou which is very little to worry about imo.
Cartridge, brass and rifle manufacturers build good sized tolerances into their product. And life goes on. |
Take a closer look in the expansion ring area - above the belt. The case looks fairly shiny. Is that horizontal line a crack developing or is that just a mark from your chamber?