Originally Posted by
email_from_AA
2520 is slow to be a good powder for your 6X45. Remember, it isn't the parent case that decides burn rate, it is the capacity to bore diameter. The 85 grain load is marginal: 103 percent case fill at 25 grains produces less than 50,000 PSI and a velocity estimate of 2587. This will be a dirty load and I do not recommend it.
With a 65 grain VMax with 26.8 grains (a 102% fill) it will produce 38000 PSI and 2750. This is an unworkable load. Here are better ones:
Take care, Rob Behr
6mmX45
Barrel: 24" ¦ Twist: 1-10" ¦ Primer: WSR ¦ Bullet Diameter .243" ¦ Case: WIN
Case: WIN ¦ Max Case Length: 1.760" ¦ Trim Length: 1.750"
Accurate 2200
55 NOSLER B-TIP 25.1 3,221 27.9 3,536 54,668 2.260
55 SIERRA BK 24.9 3,188 27.7 3,519 54,386 2.260
58 HDY V-MAX 23.3 3,094 25.9 3,370 54,472 2.260
60 BERGER FBV 23.9 3,053 26.5 3,347 54,551 2.260
62 BARNES VG 22.3 2,851 24.8 3,170 53,999 2.260
65 HDY V-MAX 22.1 2,892 24.6 3,169 54,780 2.260
70 SIERRA HPBT 22.3 2,835 24.8 3,110 54,873 2.260
75 HDY HP 21.3 2,684 23.6 2,935 54,993 2.260
75 HDY V-MAX 21.2 2,697 23.6 2,959 54,663 2.260
75 SIERRA HP 20.6 2,634 22.9 2,883 54,111 2.260
80 HDY FMJ 20.6 2,545 22.9 2,802 54,882 2.260
80 NOSLER B-TIP 21.1 2,572 23.5 2,847 54,133 2.260
85 SIERRA HPBT GK 20.1 2,471 22.3 2,741 54,686 2.260
85 BARNES TSX-BT 20.3 2,456 22.5 2,693 54,448 2.260
87 HDY V-MAX 20.3 2,485 22.5 2,727 54,552 2.260
90 SIERRA FMJBT 19.9 2,418 22.1 2,669 54,353 2.260
95 NOSLER B-TIP 19.8 2,360 22.0 2,574 54,226 2.260
100 BERGER BTT 19.4 2,322 21.6 2,532 54,966 2.260
Ramshot X-Terminator
55 NOSLER B-TIP 25.6 3,124 28.4 3,389 51,647 2.260
55 SIERRA BK 25.5 3,116 28.4 3,388 51,106 2.260
58 HDY V-MAX 25.0 3,081 27.8 3,340 54,028 2.260
60 BERGER FBV 25.2 3,058 28.0 3,320 54,129 2.260
62 BARNES VG 23.1 2,683 25.6 2,953 45,126 2.260
65 HDY V-MAX 24.1 2,903 26.8 3,153 54,259 2.260
70 SIERRA HPBT MK 24.3 2,882 26.9 3,117 54,404 2.260
75 HDY HP 23.0 2,702 25.6 2,932 54,427 2.260
75 HDY V-MAX 23.6 2,754 26.2 3,000 54,622 2.260
75 SIERRA HP 22.0 2,646 24.5 2,890 54,609 2.260
80 HDY FMJ 22.3 2,598 24.7 2,833 54,732 2.260
80 NOSLER B-TIP 23.4 2,632 26.0 2,899 54,235 2.260
85 SIERRA HPBT GK 21.8 2,548 24.2 2,770 54,244 2.260
85 BARNES TSX-FB 22.2 2,468 24.7 2,726 54,983 2.260
87 HDY V-MAX 22.0 2,517 24.4 2,770 54,709 2.260
90 SIERRA FMJBT 21.9 2,500 24.3 2,727 54,894 2.260
95 NOSLER B-TIP 21.3 2,358 23.7 2,585 54,433 2.260
100 BERGER BTT 21.1 2,342 23.4 2,556 54,099 2.260
Accurate 2230
55 NOSLER B-TIP 25.6 3,124 28.4 3,389 51,647 2.260
55 SIERRA BK 25.5 3,116 28.4 3,388 51,106 2.260
58 HDY V-MAX 25.0 3,081 27.8 3,340 54,028 2.260
60 BERGER FBV 25.2 3,058 28.0 3,320 54,129 2.260
62 BARNES VG 23.1 2,683 25.6 2,953 45,126 2.260
65 HDY V-MAX 24.1 2,903 26.8 3,153 54,259 2.260
70 SIERRA HPBT MK 24.3 2,882 26.9 3,117 54,404 2.260
75 HDY HP 23.0 2,702 25.6 2,932 54,427 2.260
75 HDY V-MAX 23.6 2,754 26.2 3,000 54,622 2.260
75 SIERRA HP 22.0 2,646 24.5 2,890 54,609 2.260
80 HDY FMJ 22.3 2,598 24.7 2,833 54,732 2.260
80 NOSLER B-TIP 23.4 2,632 26.0 2,899 54,235 2.260
85 SIERRA HPBT GK 21.8 2,548 24.2 2,770 54,244 2.260
85 BARNES TSX-FB 22.2 2,468 24.7 2,726 54,983 2.260
87 HDY V-MAX 22.0 2,517 24.4 2,770 54,709 2.260
90 SIERRA FMJBT 21.9 2,500 24.3 2,727 54,894 2.260
95 NOSLER B-TIP 21.3 2,358 23.7 2,585 54,433 2.260
100 BERGER BTT 21.1 2,342 23.4 2,556 54,099 2.260
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