I have been working on loads for my 270 WSM for several months on and off and have some questions that seem obvious to me but have not seen addressed on this or other forums.
My process has been to start at minimum loads and load in either 0.5 or 1 grain increments up to maximum published. The best group from those loads is then selected for powder charge and I start varying the distance to the lands and selecting the best of that series.
Is the optimal distance to the lands specific to that load and powder or specific to that particular bullet ie. 140 gr Nosler BT? If I change powder from Accurate Magpro to Reloder 17 will I need to re-do the distance to the lands series?
What if I just increase the Magpro charge by 2 grains?
I've been loading shotshells for years but am still a newbie with metallics and don't know the tendencies or rules of thumb yet.
Thanks in advance!
My process has been to start at minimum loads and load in either 0.5 or 1 grain increments up to maximum published. The best group from those loads is then selected for powder charge and I start varying the distance to the lands and selecting the best of that series.
Is the optimal distance to the lands specific to that load and powder or specific to that particular bullet ie. 140 gr Nosler BT? If I change powder from Accurate Magpro to Reloder 17 will I need to re-do the distance to the lands series?
What if I just increase the Magpro charge by 2 grains?
I've been loading shotshells for years but am still a newbie with metallics and don't know the tendencies or rules of thumb yet.
Thanks in advance!