Dating a sampw model 19
Over the past several months I have been in pursuit of hard facts that I hoped would put to an end, at least for me, the question of whether or not a full time diet of magnum loads would lead to premature failure of the K-Frame magnum revolvers.I have learned quite a lot and have had the good fortune to have had input from numerous sources including police officers, gunsmiths, shooting sports professionals, sportsmen, and hunters. But you should read the rest of the article and judge for yourself.
Todays bullet designs offer equal or better performance from heavier weight bullets and over a broader range of velocities.Without sophisticated monitoring equipment, I carefully approached each load increasing powder charges in small (0.1 grain) increments.Cautiously changing primers and even cases to detect any indications of excessive pressure. As pressure increased the primer would begin to flatten out around the primer pocket and then start to flow back into the firing pin hole.Checking the dimensions of my 19-3 confirms that for the 158 grain HP bullet, the leading edge of the bullet is engaging the lands as the base of the bullet has just left the case mouth and is flush with the cylinder throat.For the lighter HP bullets of 115 to 125 grains, there is a gap of approximately 0.15 to 0.12 inch, respectively.