for what its worth, the best ammo I have ever shot was Remington UMC, cheap green box 55FMJ 223. At $10.50/20 It was good to hit a dinner plate at 600 yards all day. Meanwhile, my 1/7 AR that will shoot caps off beer bottles at 50 yards with the sloppiest 55gr loads couldn't hit a paint bucket with 69gr SMK's.
Shocking ammo test results
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More than bullet jump distance to the lands (throat length), I have found the consistency of the length from base of the case to the ogive's tangent is most critical. If you use a comparator tool, you will find considerable variance of bullet base-to-ogive measurements. They vary considerably by bullet-to-bullet in the same box. Occasionally you will get a box that is fairly consistent, but that is not common unless you are using Berger bullets. They have been most consistent in this dimension for me even from lot to lot. Still, I prefer a soft point bullet for hunting. Bergers for paper punching, tho.
When loading match ammunition for my 6.5x55 I load every round .010" to .020" long and then seat them to their final length to the ogive-to-base length using the RCBS Precision Mic tool. Best results are when this measurement varies less than .002". At least that has been my experience.
I hope this helpful.
When loading match ammunition for my 6.5x55 I load every round .010" to .020" long and then seat them to their final length to the ogive-to-base length using the RCBS Precision Mic tool. Best results are when this measurement varies less than .002". At least that has been my experience.
I hope this helpful.
There are so many things that can influence accuracy that it's hard to get it to make sense sometimes.I have a 308 that will shoot under an inch all day with one powder,but won't stay inside of 4 inches with another.Just changing lots of ammo can make a huge difference.Sometimes you just have to accept the results and not waste time on why they are what they are.
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