One other aspect of all the shooting in all of the 45 Cal rifles that I shoot 40 cal bullets in and I shoot nothing but the light blue sabot,, the most accurate load with every 40 cal bullet has been right where the light blue Sabot started to either show some type of degradation or stress for instance with IMR 4198 that's almost always for me right at 57 grains when I go slightly above that I start having issues I know other people have shot hotter loads of imr4198 I think they're probably either shooting a wad or a base what I am getting at the is this is constant in every single one of these rifles it's gotten to where I go straight to 57 grains if I'm shooting smokeless I shoot 57 grains from the 180s all the way up to the 275 that load that weight load shoots the best in every single one of these rifles but that weight load is also where my light blue is starting to have issues I am convinced that the light blue is going to always shoot best right at about 90% I guess if it's potential to hold up not sure what you would call that all I know is this is glaringly obvious when you have this many rifles that are showing this,,, I guess maybe I should word it different why is 57 grains the most accurate load across the board in multiple rifles shooting the light blue, you would think it would be 55 or 56 no I did run into problems with the Krieger 18 twist shooting 57 grains it's a little too much I'm going to back down to 56, 56 shot a half inch three shot group a few weeks ago still if I look at that particular rifle 56 is right where the light blue is starting to struggle in that particular Barrel and again that is where the accuracy is at my point is I guess we don't consider sometimes it's tuning that plastic to where it needs to be as much as it is the bullet I'm amazed at the constant in these particular guns in these barrels it's always 57 grains.