Thread: 7mm-08 reloads extraction issue - thoughts please

Greetings,
The SST is a different projectile to the Interlock, Although jacket thickness may be similar the SST is significantly longer. This will push up pressure a little if the projectiles are loaded to the same LOA as the longer projectile takes up some powder space.
I don't think this is the problem however. The fact that the bolt handle can be lifted easily but no pulled back tells me there is no primary extraction. Lifting the bolt handle should cam the case out of the chamber slightly so that the bolt can be pulled back easily. Clearly this is not happening. Whether this is a fault of the particular rifle or is inherent in the design I don't know.
I used 42.5 grains with the 140 grain Remington CL in a 19 inch barrelled 7mm-08 which produced 2,700 fps.
Regards Grandpamac.
PS. I see, as suspected, that the Ruger American is a three lug design. The shorter bolt lift makes it more difficult to produce primary extraction especially in a rifle that sells to a budget price. Dropping the load slightly should help. It would be interesting to know what the two projectile chronographed with the same load.