Alright guys, I’ve ran into some interesting issues regarding my handloads for my .308.
So I’ve been loading for this rifle a bit lately and had some extraordinary loads using imr4064, 178gr BTHP, and Winchester lr primers all in Lapua, Remington and fc brass. The group was printing a constant of .5-.75moa at 100 yards, velocity was 2749 but with high sd and es.
I pulled the trigger on some starline match small rifle primer .308 brass.
Doing my ladder test with the new brass I loaded first the same weight as my standard load using BR4 primers and cci450 magnums but my velocity was approx 150-200fps lower, but the es and sds were single digit or no more than 12-15. With that my groups just weren’t acceptable. So I worked a ladder test using BR4s from 43-45grs of powder and still no good groups best was probably just at an inch.
So what gives? It could be me but I felt pretty good about my shots and called any I know were pulled. Anyone have a recommendation I’m going to re work the load maybe using standard small rifle primers to see if that helps.
So I’ve been loading for this rifle a bit lately and had some extraordinary loads using imr4064, 178gr BTHP, and Winchester lr primers all in Lapua, Remington and fc brass. The group was printing a constant of .5-.75moa at 100 yards, velocity was 2749 but with high sd and es.
I pulled the trigger on some starline match small rifle primer .308 brass.
Doing my ladder test with the new brass I loaded first the same weight as my standard load using BR4 primers and cci450 magnums but my velocity was approx 150-200fps lower, but the es and sds were single digit or no more than 12-15. With that my groups just weren’t acceptable. So I worked a ladder test using BR4s from 43-45grs of powder and still no good groups best was probably just at an inch.
So what gives? It could be me but I felt pretty good about my shots and called any I know were pulled. Anyone have a recommendation I’m going to re work the load maybe using standard small rifle primers to see if that helps.
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