from base to neck), S (shoulder angle intercepts the center line) and the α dimensional value (shoulder angle) conflict with SAAMI dimensions. This is due to how the L1 and L2 values are defined in relation to the centers of the r1 and r2 dimensional values by CIP. The following table provides the conflicting values provided by SAAMI and CIP. {| class="wikitable" border="1" |+ Cartridge dimension and specification value conflicts between SAAMI and CIP |- | style="background: #eeeeee" width="200pt" | Dimension / specification | style="background: #eeeeee" width="180pt" | CIP dimension index | style="background: #eeeeee" width="180pt" | SAAMI value | style="background: #eeeeee" width="180pt" | CIP value |- | style="background: #eeeeee" | Body to shoulder radius || r1 || || |- | style="background: #eeeeee" | Neck to shoulder radius || r2 || || |- | style="background: #eeeeee" | Base to shoulder length || L1 || || |- | style="background: #eeeeee" | Base to neck length || L2 || || |- | style="background: #eeeeee" | Angle between shoulder || α || Does not provide || 56°15'56" |- | style="background: #eeeeee" | Length to shoulder vertex || S || Does not provide || |- | style="background: #eeeeee" | Pressure || Pmax || || |} Like all Weatherby cartridges, the .460 Weatherby Magnum cartridge has a double radius shoulder where the body and the neck are connected with a continuously curving shoulder; the curve of which reverses at the point of tangency. SAAMI defines the length to the shoulder as the demarcation point where the bottom of inside curvature radius (corresponding roughly to CIP's r1) of the shoulder begins and the length to the neck as where the outside curvature radius (approximating CIP's r2) meets the neck. However, CIP does not define the location of the centers of the r1 and r2 whereas SAAMI provides this as being in inline with the length to the shoulder (inside radius) and length to neck (outside radius). This is due to the CIP treatment of r1 and r2 values as fillet radii as they do with many other cartridges. Chamber dimensions and specifications SAAMI compliant .460 Weatherby Magnum chamber schematic: All dimensions in inches [millimeters]. SAAMI recommends a maximum chamber pressure rating of while CIP provides a maximum chamber pressure rating of . Weatherby no longer provides a long leade (freebore) for the cartridge. Currently Weatherby provides of freebore for the .460 Weatherby in the Weatherby Mark V