Some confusion may come from guys that carry their rifles in "soft" cases. Many scopes get bent and some more than others. Scopes that use 6061 Al are nowhere near as tough as scopes that use 7075 Aluminum which has many characteristics as some steels.
Also, guys rarely ever consider the effect of wind on their shot placement. Switching winds are amazing in how they will affect shot placement.
Placing the front sling swivel on top of the front bag rest will absolutely have an effect on shot placement.
Custom barrels that I have in all calibers rarely ever have cold bore shot off more than 1/2", but on the other hand, old worn barrels with oil in them or dry patched, seem to have a greater problem with cold bore shots.
A man has to work out his own salvation.
Also, guys rarely ever consider the effect of wind on their shot placement. Switching winds are amazing in how they will affect shot placement.
Placing the front sling swivel on top of the front bag rest will absolutely have an effect on shot placement.
Custom barrels that I have in all calibers rarely ever have cold bore shot off more than 1/2", but on the other hand, old worn barrels with oil in them or dry patched, seem to have a greater problem with cold bore shots.
A man has to work out his own salvation.