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看来你的bullet需要jump一下来提高精度：
In general, the less distance a bullet has to travel to reach the lands when leaving the cartridge mouth, the better one’s accuracy is apt to be. This travel leaves the bullet unsupported, and longer “bullet jump” to the rifling increases chances of the bullets’ entering the rifling off-center. However, this rule is not always true; handloaders should keep an open mind when experimenting with seating depths to improve accuracy. Sometimes, bullets may perform better with a bit more “jump” to the rifling, rather than less. The techniques discussed here are used by advanced handloaders for competition shooting. However, they also have applications for hunting/long range informal target shooting, especially in bolt action or single-shot rifles. |
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发表于 2016-5-8 19:45
