I’m new at developing loads, and I know R26 is a better match with this bullet but I have 8# of RL22. 8 years ago I loaded 46.5 g of R22 (max load with Nosler data) and got 2605fps. I’d like to take advantage of my modern rifle, but unsure how far to push pressure. 58,000 psi? 60,000? Where do folks see pressure signs? Also unsure how much powder I can reasonably stuff into a Lapua case. Would appreciate hearing some insights; I’m gathering I should be able to reach 2800-2850. Thanks for the help
Tikka 6.5x55 Swede, R22, 140 Accubonds, QL?
- Thread starter mpstan
- Start date
gerry
Ammo Smith
- Mar 1, 2007
- 6,908
- 1,791
Welcome to the forum @mpstan I'm sure someone will be able to run the numbers for you. We have a 6.5x55 and it is a sweet cartridge. Never tried RL 22 since it's so hard to find here but I do believe you can safely get more than 2600 fps. It has more capacity than the 6.5 Creedmoor and even our 260 Rem which can get over 2700 fps safely.
quickload calls for max pressure at 55114 PSI
Cartridge : 6.5 x 55 Swedish
Bullet : .264, 140, Nosler AccuBond 57873
Useable Case Capaci: 51.841 grain H2O = 3.366 cm³
Cartridge O.A.L. L6: 3.150 inch = 80.01 mm
Barrel Length : 22.0 inch = 558.8 mm
Powder : Alliant Reloder-22 *C
Predicted data by increasing and decreasing the given charge,
incremented in steps of 2.0% of nominal charge.
CAUTION: Figures exceed maximum and minimum recommended loads !
Step Fill. Charge Vel. Energy Pmax Pmuz Prop.Burnt B_Time
% % Grains fps ft.lbs psi psi % ms
-20.0 81 39.12 2185 1484 28328 9860 87.1 1.598
-18.0 83 40.10 2242 1563 30235 10215 88.6 1.556
-16.0 85 41.08 2300 1645 32265 10563 90.0 1.515
-14.0 87 42.05 2358 1729 34457 10900 91.3 1.475
-12.0 89 43.03 2417 1815 36793 11227 92.5 1.436
-10.0 91 44.01 2475 1904 39298 11542 93.7 1.392
-08.0 93 44.99 2534 1996 41984 11843 94.7 1.348
-06.0 95 45.97 2593 2090 44865 12129 95.7 1.307
-04.0 97 46.94 2652 2186 47962 12398 96.6 1.266 ! Near Maximum !
-02.0 99 47.92 2711 2284 51288 12649 97.4 1.227 ! Near Maximum !
+00.0 101 48.90 2770 2385 54869 12881 98.1 1.190 !DANGEROUS LOAD-DO NOT USE!
+02.0 103 49.88 2829 2487 58705 13091 98.6 1.153 !DANGEROUS LOAD-DO NOT USE!
+04.0 105 50.86 2887 2592 62805 13280 99.1 1.119 !DANGEROUS LOAD-DO NOT USE!
+06.0 107 51.83 2946 2698 67211 13445 99.5 1.085 !DANGEROUS LOAD-DO NOT USE!
+08.0 109 52.81 3005 2806 71952 13585 99.8 1.052 !DANGEROUS LOAD-DO NOT USE!
+10.0 111 53.79 3063 2916 77061 13699 99.9 1.021 !DANGEROUS LOAD-DO NOT USE!
Results caused by ± 10% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 10% relative to nominal value:
+Ba 101 48.90 2914 2640 66907 12640 100.0 1.094 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 101 48.90 2575 2061 43826 12353 91.2 1.313
58000 PSI
Cartridge : 6.5 x 55 Swedish
Bullet : .264, 140, Nosler AccuBond 57873
Useable Case Capaci: 51.841 grain H2O = 3.366 cm³
Cartridge O.A.L. L6: 3.150 inch = 80.01 mm
Barrel Length : 22.0 inch = 558.8 mm
Powder : Alliant Reloder-22 *C
Predicted data by increasing and decreasing the given charge,
incremented in steps of 2.0% of nominal charge.
CAUTION: Figures exceed maximum and minimum recommended loads !
Step Fill. Charge Vel. Energy Pmax Pmuz Prop.Burnt B_Time
% % Grains fps ft.lbs psi psi % ms
-20.0 82 39.76 2222 1535 29561 10093 88.1 1.570
-18.0 84 40.75 2281 1617 31579 10449 89.5 1.528
-16.0 86 41.75 2340 1702 33757 10796 90.9 1.487
-14.0 88 42.74 2399 1789 36084 11132 92.2 1.447
-12.0 91 43.74 2459 1879 38580 11456 93.3 1.404
-10.0 93 44.73 2518 1972 41257 11765 94.5 1.360
-08.0 95 45.72 2578 2066 44133 12060 95.5 1.317
-06.0 97 46.72 2638 2163 47226 12338 96.4 1.275 ! Near Maximum !
-04.0 99 47.71 2698 2263 50553 12597 97.2 1.236 ! Near Maximum !
-02.0 101 48.71 2758 2365 54137 12837 97.9 1.197 ! Near Maximum !
+00.0 103 49.70 2818 2468 57988 13055 98.5 1.160 !DANGEROUS LOAD-DO NOT USE!
+02.0 105 50.69 2878 2574 62106 13250 99.1 1.124 !DANGEROUS LOAD-DO NOT USE!
+04.0 107 51.69 2937 2682 66533 13422 99.5 1.090 !DANGEROUS LOAD-DO NOT USE!
+06.0 109 52.68 2997 2792 71301 13568 99.7 1.056 !DANGEROUS LOAD-DO NOT USE!
+08.0 111 53.68 3056 2903 76445 13687 99.9 1.024 !DANGEROUS LOAD-DO NOT USE!
+10.0 113 54.67 3115 3017 82002 13779 100.0 0.993 !DANGEROUS LOAD-DO NOT USE!
Results caused by ± 10% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 10% relative to nominal value:
+Ba 103 49.70 2959 2722 70650 12728 100.0 1.068 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 103 49.70 2624 2141 46238 12613 92.2 1.280
60000 PSI
Cartridge : 6.5 x 55 Swedish
Bullet : .264, 140, Nosler AccuBond 57873
Useable Case Capaci: 51.841 grain H2O = 3.366 cm³
Cartridge O.A.L. L6: 3.150 inch = 80.01 mm
Barrel Length : 22.0 inch = 558.8 mm
Powder : Alliant Reloder-22 *C
Predicted data by increasing and decreasing the given charge,
incremented in steps of 2.0% of nominal charge.
CAUTION: Figures exceed maximum and minimum recommended loads !
Step Fill. Charge Vel. Energy Pmax Pmuz Prop.Burnt B_Time
% % Grains fps ft.lbs psi psi % ms
-20.0 83 40.16 2246 1568 30361 10238 88.7 1.553
-18.0 85 41.16 2305 1652 32455 10593 90.1 1.511
-16.0 87 42.17 2365 1739 34721 10939 91.4 1.470
-14.0 89 43.17 2425 1828 37141 11273 92.7 1.430
-12.0 91 44.18 2485 1920 39742 11594 93.9 1.384
-10.0 94 45.18 2545 2014 42533 11901 94.9 1.340
-08.0 96 46.18 2606 2111 45537 12191 95.9 1.297
-06.0 98 47.19 2666 2210 48768 12463 96.8 1.257 ! Near Maximum !
-04.0 100 48.19 2727 2312 52250 12715 97.6 1.217 ! Near Maximum !
-02.0 102 49.20 2787 2415 56004 12947 98.2 1.179 !DANGEROUS LOAD-DO NOT USE!
+00.0 104 50.20 2848 2521 60023 13156 98.8 1.142 !DANGEROUS LOAD-DO NOT USE!
+02.0 106 51.20 2908 2629 64336 13341 99.3 1.106 !DANGEROUS LOAD-DO NOT USE!
+04.0 108 52.21 2968 2739 68983 13501 99.6 1.072 !DANGEROUS LOAD-DO NOT USE!
+06.0 110 53.21 3028 2851 73995 13635 99.9 1.039 !DANGEROUS LOAD-DO NOT USE!
+08.0 112 54.22 3088 2965 79410 13740 100.0 1.007 !DANGEROUS LOAD-DO NOT USE!
+10.0 114 55.22 3148 3080 85269 13819 100.0 0.976 !DANGEROUS LOAD-DO NOT USE!
Results caused by ± 10% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 10% relative to nominal value:
+Ba 104 50.20 2987 2774 73099 12782 100.0 1.052 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 104 50.20 2655 2192 47822 12770 92.8 1.260 ! Near Maximum !
65000 PSI
Cartridge : 6.5 x 55 Swedish
Bullet : .264, 140, Nosler AccuBond 57873
Useable Case Capaci: 51.841 grain H2O = 3.366 cm³
Cartridge O.A.L. L6: 3.150 inch = 80.01 mm
Barrel Length : 22.0 inch = 558.8 mm
Powder : Alliant Reloder-22 *C
Predicted data by increasing and decreasing the given charge,
incremented in steps of 2.0% of nominal charge.
CAUTION: Figures exceed maximum and minimum recommended loads !
Step Fill. Charge Vel. Energy Pmax Pmuz Prop.Burnt B_Time
% % Grains fps ft.lbs psi psi % ms
-20.0 85 41.04 2298 1642 32197 10550 89.9 1.517
-18.0 87 42.07 2359 1730 34484 10905 91.3 1.474
-16.0 89 43.09 2420 1821 36942 11247 92.6 1.433
-14.0 91 44.12 2482 1914 39586 11576 93.8 1.387
-12.0 93 45.14 2543 2011 42430 11890 94.9 1.342
-10.0 96 46.17 2605 2110 45493 12187 95.9 1.298
-08.0 98 47.20 2667 2211 48796 12465 96.8 1.256 ! Near Maximum !
-06.0 100 48.22 2729 2315 52358 12722 97.6 1.216 ! Near Maximum !
-04.0 102 49.25 2791 2421 56206 12958 98.3 1.177 !DANGEROUS LOAD-DO NOT USE!
-02.0 104 50.27 2852 2529 60330 13170 98.9 1.139 !DANGEROUS LOAD-DO NOT USE!
+00.0 106 51.30 2914 2640 64766 13358 99.3 1.103 !DANGEROUS LOAD-DO NOT USE!
+02.0 108 52.33 2976 2752 69552 13518 99.7 1.068 !DANGEROUS LOAD-DO NOT USE!
+04.0 110 53.35 3037 2867 74725 13651 99.9 1.035 !DANGEROUS LOAD-DO NOT USE!
+06.0 113 54.38 3098 2983 80324 13755 100.0 1.002 !DANGEROUS LOAD-DO NOT USE!
+08.0 115 55.40 3159 3101 86395 13832 100.0 0.970 !DANGEROUS LOAD-DO NOT USE!
+10.0 117 56.43 3219 3221 92990 13902 100.0 0.940 !DANGEROUS LOAD-DO NOT USE!
Results caused by ± 10% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 10% relative to nominal value:
+Ba 106 51.30 3049 2889 78806 12897 100.0 1.017 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 106 51.30 2724 2306 51528 13103 94.0 1.216 ! Near Maximum !
Cartridge : 6.5 x 55 Swedish
Bullet : .264, 140, Nosler AccuBond 57873
Useable Case Capaci: 51.841 grain H2O = 3.366 cm³
Cartridge O.A.L. L6: 3.150 inch = 80.01 mm
Barrel Length : 22.0 inch = 558.8 mm
Powder : Alliant Reloder-22 *C
Predicted data by increasing and decreasing the given charge,
incremented in steps of 2.0% of nominal charge.
CAUTION: Figures exceed maximum and minimum recommended loads !
Step Fill. Charge Vel. Energy Pmax Pmuz Prop.Burnt B_Time
% % Grains fps ft.lbs psi psi % ms
-20.0 81 39.12 2185 1484 28328 9860 87.1 1.598
-18.0 83 40.10 2242 1563 30235 10215 88.6 1.556
-16.0 85 41.08 2300 1645 32265 10563 90.0 1.515
-14.0 87 42.05 2358 1729 34457 10900 91.3 1.475
-12.0 89 43.03 2417 1815 36793 11227 92.5 1.436
-10.0 91 44.01 2475 1904 39298 11542 93.7 1.392
-08.0 93 44.99 2534 1996 41984 11843 94.7 1.348
-06.0 95 45.97 2593 2090 44865 12129 95.7 1.307
-04.0 97 46.94 2652 2186 47962 12398 96.6 1.266 ! Near Maximum !
-02.0 99 47.92 2711 2284 51288 12649 97.4 1.227 ! Near Maximum !
+00.0 101 48.90 2770 2385 54869 12881 98.1 1.190 !DANGEROUS LOAD-DO NOT USE!
+02.0 103 49.88 2829 2487 58705 13091 98.6 1.153 !DANGEROUS LOAD-DO NOT USE!
+04.0 105 50.86 2887 2592 62805 13280 99.1 1.119 !DANGEROUS LOAD-DO NOT USE!
+06.0 107 51.83 2946 2698 67211 13445 99.5 1.085 !DANGEROUS LOAD-DO NOT USE!
+08.0 109 52.81 3005 2806 71952 13585 99.8 1.052 !DANGEROUS LOAD-DO NOT USE!
+10.0 111 53.79 3063 2916 77061 13699 99.9 1.021 !DANGEROUS LOAD-DO NOT USE!
Results caused by ± 10% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 10% relative to nominal value:
+Ba 101 48.90 2914 2640 66907 12640 100.0 1.094 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 101 48.90 2575 2061 43826 12353 91.2 1.313
58000 PSI
Cartridge : 6.5 x 55 Swedish
Bullet : .264, 140, Nosler AccuBond 57873
Useable Case Capaci: 51.841 grain H2O = 3.366 cm³
Cartridge O.A.L. L6: 3.150 inch = 80.01 mm
Barrel Length : 22.0 inch = 558.8 mm
Powder : Alliant Reloder-22 *C
Predicted data by increasing and decreasing the given charge,
incremented in steps of 2.0% of nominal charge.
CAUTION: Figures exceed maximum and minimum recommended loads !
Step Fill. Charge Vel. Energy Pmax Pmuz Prop.Burnt B_Time
% % Grains fps ft.lbs psi psi % ms
-20.0 82 39.76 2222 1535 29561 10093 88.1 1.570
-18.0 84 40.75 2281 1617 31579 10449 89.5 1.528
-16.0 86 41.75 2340 1702 33757 10796 90.9 1.487
-14.0 88 42.74 2399 1789 36084 11132 92.2 1.447
-12.0 91 43.74 2459 1879 38580 11456 93.3 1.404
-10.0 93 44.73 2518 1972 41257 11765 94.5 1.360
-08.0 95 45.72 2578 2066 44133 12060 95.5 1.317
-06.0 97 46.72 2638 2163 47226 12338 96.4 1.275 ! Near Maximum !
-04.0 99 47.71 2698 2263 50553 12597 97.2 1.236 ! Near Maximum !
-02.0 101 48.71 2758 2365 54137 12837 97.9 1.197 ! Near Maximum !
+00.0 103 49.70 2818 2468 57988 13055 98.5 1.160 !DANGEROUS LOAD-DO NOT USE!
+02.0 105 50.69 2878 2574 62106 13250 99.1 1.124 !DANGEROUS LOAD-DO NOT USE!
+04.0 107 51.69 2937 2682 66533 13422 99.5 1.090 !DANGEROUS LOAD-DO NOT USE!
+06.0 109 52.68 2997 2792 71301 13568 99.7 1.056 !DANGEROUS LOAD-DO NOT USE!
+08.0 111 53.68 3056 2903 76445 13687 99.9 1.024 !DANGEROUS LOAD-DO NOT USE!
+10.0 113 54.67 3115 3017 82002 13779 100.0 0.993 !DANGEROUS LOAD-DO NOT USE!
Results caused by ± 10% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 10% relative to nominal value:
+Ba 103 49.70 2959 2722 70650 12728 100.0 1.068 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 103 49.70 2624 2141 46238 12613 92.2 1.280
60000 PSI
Cartridge : 6.5 x 55 Swedish
Bullet : .264, 140, Nosler AccuBond 57873
Useable Case Capaci: 51.841 grain H2O = 3.366 cm³
Cartridge O.A.L. L6: 3.150 inch = 80.01 mm
Barrel Length : 22.0 inch = 558.8 mm
Powder : Alliant Reloder-22 *C
Predicted data by increasing and decreasing the given charge,
incremented in steps of 2.0% of nominal charge.
CAUTION: Figures exceed maximum and minimum recommended loads !
Step Fill. Charge Vel. Energy Pmax Pmuz Prop.Burnt B_Time
% % Grains fps ft.lbs psi psi % ms
-20.0 83 40.16 2246 1568 30361 10238 88.7 1.553
-18.0 85 41.16 2305 1652 32455 10593 90.1 1.511
-16.0 87 42.17 2365 1739 34721 10939 91.4 1.470
-14.0 89 43.17 2425 1828 37141 11273 92.7 1.430
-12.0 91 44.18 2485 1920 39742 11594 93.9 1.384
-10.0 94 45.18 2545 2014 42533 11901 94.9 1.340
-08.0 96 46.18 2606 2111 45537 12191 95.9 1.297
-06.0 98 47.19 2666 2210 48768 12463 96.8 1.257 ! Near Maximum !
-04.0 100 48.19 2727 2312 52250 12715 97.6 1.217 ! Near Maximum !
-02.0 102 49.20 2787 2415 56004 12947 98.2 1.179 !DANGEROUS LOAD-DO NOT USE!
+00.0 104 50.20 2848 2521 60023 13156 98.8 1.142 !DANGEROUS LOAD-DO NOT USE!
+02.0 106 51.20 2908 2629 64336 13341 99.3 1.106 !DANGEROUS LOAD-DO NOT USE!
+04.0 108 52.21 2968 2739 68983 13501 99.6 1.072 !DANGEROUS LOAD-DO NOT USE!
+06.0 110 53.21 3028 2851 73995 13635 99.9 1.039 !DANGEROUS LOAD-DO NOT USE!
+08.0 112 54.22 3088 2965 79410 13740 100.0 1.007 !DANGEROUS LOAD-DO NOT USE!
+10.0 114 55.22 3148 3080 85269 13819 100.0 0.976 !DANGEROUS LOAD-DO NOT USE!
Results caused by ± 10% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 10% relative to nominal value:
+Ba 104 50.20 2987 2774 73099 12782 100.0 1.052 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 104 50.20 2655 2192 47822 12770 92.8 1.260 ! Near Maximum !
65000 PSI
Cartridge : 6.5 x 55 Swedish
Bullet : .264, 140, Nosler AccuBond 57873
Useable Case Capaci: 51.841 grain H2O = 3.366 cm³
Cartridge O.A.L. L6: 3.150 inch = 80.01 mm
Barrel Length : 22.0 inch = 558.8 mm
Powder : Alliant Reloder-22 *C
Predicted data by increasing and decreasing the given charge,
incremented in steps of 2.0% of nominal charge.
CAUTION: Figures exceed maximum and minimum recommended loads !
Step Fill. Charge Vel. Energy Pmax Pmuz Prop.Burnt B_Time
% % Grains fps ft.lbs psi psi % ms
-20.0 85 41.04 2298 1642 32197 10550 89.9 1.517
-18.0 87 42.07 2359 1730 34484 10905 91.3 1.474
-16.0 89 43.09 2420 1821 36942 11247 92.6 1.433
-14.0 91 44.12 2482 1914 39586 11576 93.8 1.387
-12.0 93 45.14 2543 2011 42430 11890 94.9 1.342
-10.0 96 46.17 2605 2110 45493 12187 95.9 1.298
-08.0 98 47.20 2667 2211 48796 12465 96.8 1.256 ! Near Maximum !
-06.0 100 48.22 2729 2315 52358 12722 97.6 1.216 ! Near Maximum !
-04.0 102 49.25 2791 2421 56206 12958 98.3 1.177 !DANGEROUS LOAD-DO NOT USE!
-02.0 104 50.27 2852 2529 60330 13170 98.9 1.139 !DANGEROUS LOAD-DO NOT USE!
+00.0 106 51.30 2914 2640 64766 13358 99.3 1.103 !DANGEROUS LOAD-DO NOT USE!
+02.0 108 52.33 2976 2752 69552 13518 99.7 1.068 !DANGEROUS LOAD-DO NOT USE!
+04.0 110 53.35 3037 2867 74725 13651 99.9 1.035 !DANGEROUS LOAD-DO NOT USE!
+06.0 113 54.38 3098 2983 80324 13755 100.0 1.002 !DANGEROUS LOAD-DO NOT USE!
+08.0 115 55.40 3159 3101 86395 13832 100.0 0.970 !DANGEROUS LOAD-DO NOT USE!
+10.0 117 56.43 3219 3221 92990 13902 100.0 0.940 !DANGEROUS LOAD-DO NOT USE!
Results caused by ± 10% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 10% relative to nominal value:
+Ba 106 51.30 3049 2889 78806 12897 100.0 1.017 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 106 51.30 2724 2306 51528 13103 94.0 1.216 ! Near Maximum !
TackDriver284
Handloader
- Feb 13, 2016
- 2,559
- 2,138
Welcome to the forum, if unsure on how to read pressure, here is a good read.
Understanding Pressure :: Primal Rights, Inc
Reading pressure is a required skill that all shooters must have. Whether you are shooting factory ammunition or your own handloads, you absolutely must be able to detect and interpret pressure signs on your fired brass.
www.primalrights.com
Aussie Wanderer
Beginner
- May 5, 2022
- 171
- 333
Interesting the small gains at the higher pressures, I would have expected more, particularly going from 58,000 to 65,000psi. Maybe 70fps which is literally nothing in the real world for hunting or targets, but I bet the brass feels it.
I’ve been loading my 70 Swede to what Jim showed around the 60-63k PSI mark for quite awhile, using 26. I also used some 7828 and 22 back before I swapped over to 26. It’ll easily get 2800 with loads that can be fired numerous times if not forever in Hornady or Lapua brass.
I agree, the jump from what the data shows from 58-65k isn’t huge and I don’t shoot for max pressure only the spot where these slow burning powders give tight numbers and good uniformity.
I agree, the jump from what the data shows from 58-65k isn’t huge and I don’t shoot for max pressure only the spot where these slow burning powders give tight numbers and good uniformity.
wvbuckbuster
Handloader
- Nov 5, 2015
- 2,683
- 2,403
This year I used a Hornady 140gr SST (sorry Nosler) 47.5grs RL22 Fed 210 in my Tikka T3X Hunter STFL best groups were 0.306. SB6.5 46.5grs did 2731 fps 0.6480 group size. Saving my RL26 for a 270 Win Nosler 150gr BT project. Dan.
- Thread starter
- #8
This is great information; I've read about reading pressures but never really done it much. Thanks very much!
- Thread starter
- #9
Very interesting and useful information here. Thank you all for the help. Some take aways from this:
1. I found it interesting that all of the table data suggests 46.5g of R22 would produce close to 2605 fps, which is exactly what I've recorded with my rifle.
2. It appears that the definition of "Dangerous Load" pressure is different when the 4 pressure scenarios are illustrated; not sure why
I just checked one of my primed, sized Lapua cases: it holds 55g all the way to the top, and 50g at the bottom of the neck.
From here I'm thinking of doing a pressure ladder from 46.5g to 50.0g, and stop if I'm seeing pressure signs. If I see a "velocity node", go with a load in the middle of that node? Or do another ladder surrounding that node with 5 shot groups to determine accurate load?
Thank you all again
1. I found it interesting that all of the table data suggests 46.5g of R22 would produce close to 2605 fps, which is exactly what I've recorded with my rifle.
2. It appears that the definition of "Dangerous Load" pressure is different when the 4 pressure scenarios are illustrated; not sure why
I just checked one of my primed, sized Lapua cases: it holds 55g all the way to the top, and 50g at the bottom of the neck.
From here I'm thinking of doing a pressure ladder from 46.5g to 50.0g, and stop if I'm seeing pressure signs. If I see a "velocity node", go with a load in the middle of that node? Or do another ladder surrounding that node with 5 shot groups to determine accurate load?
Thank you all again
your plan sounds good to me . the 60000PSI chart shows 50.2 gr of powder is at 104 % case fill . that's a nice comfortable working fill . I try to stay at or under 105% . use a powder funnel with a drop tube ,and pour the powder slow . this will help settle the powder , you'll be surprised how this helps . you can work the powder node either way . a lot of mine I load in the middle of the node , and they seem to shoot well , especially for a couple hundred yard hunting rifle . depending on what you want , you can always try tweaking the powder up a little , and down a little to see if it gets better . let us know how it turns out . watch for pressure and have fun .
When will you get a chance to shoot em?
- Thread starter
- #12
