For Swift purposes I'd suggest the Sierra 50gr BlitzKing
.248 @ 3300 fps and above
.243 between 2650 and 3300 fps
.232 between 2050 and 2650 fps
.222 between 1800 and 2050 fps
.203 @ 1800 fps and below
The 55gr BlitzKing is slightly better, but at the high end of the Swift box and you are trading off velocity
.271 @ 3100 fps and above
.264 between 2550 and 3100 fps
.250 between 2050 and 2550 fps
.236 between 1800 and 2050 fps
.224 @ 1800 fps and belo
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