I see a lot of threads on shoulder bump and measurement issues.
Since I load predominantly these days for 223 Rem bolt rifles, one of the practices that I have adopted that has helped significantly improve my consistency measuring shoulder bump is mount my 223 Rem caliber group specific bump gauge on a dedicated caliper and leave it mounted on that caliper. Also, I use the Whidden single piece bump gauge which has no inserts which minimizes the interfaces and alignment issues.
I realize that this may not be practical if you load for a lot of calibers that require different caliber group bump gauges but if you load for a limited number, the cost of the extra caliper might be worth it if you're having trouble with consistency in your measurements. Also saves a lot of set up time since the gauge is already mounted on the caliper.
Since I load predominantly these days for 223 Rem bolt rifles, one of the practices that I have adopted that has helped significantly improve my consistency measuring shoulder bump is mount my 223 Rem caliber group specific bump gauge on a dedicated caliper and leave it mounted on that caliper. Also, I use the Whidden single piece bump gauge which has no inserts which minimizes the interfaces and alignment issues.
I realize that this may not be practical if you load for a lot of calibers that require different caliber group bump gauges but if you load for a limited number, the cost of the extra caliper might be worth it if you're having trouble with consistency in your measurements. Also saves a lot of set up time since the gauge is already mounted on the caliper.
