20 Creedmoor
- Thread starter desertcj
- Start date
- Thread starter
- #3
coop22250":2hamohel said:
Can probably get an idea on that from 6.5 TCU data? That'd be a sweetheart, but for varmints I'd opt for the 6x45 or 6 TCU for the better selection of varmint bullets. I'd venture that the pistol data for 6.5 TCU would compensate for the shorter. 221 fireball case out of a longer barrel.
Thebear_78
Handloader
- Sep 30, 2004
- 3,101
- 885
Way overbore. I have a 22 creedmoor and it’s only useful for the heavy .224 projectiles. I’m running 95s in mine. You’d likely not be able to keep .204s together at the speeds you would achieve.
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- #5
Code:
Cartridge : 20 Creedmore
Bullet : .204, 45, Hornady SP 22008
Useable Case Capaci: 49.450 grain H2O = 3.211 cm³
Cartridge O.A.L. L6: 2.513 inch = 63.83 mm
Barrel Length : 24.0 inch = 609.6 mm
Predicted Data for Indicated Charges of the Following Powders.
Matching Maximum Pressure: 59000 psi, or 406 MPa
or a maximum loading ratio or filling of 110 %
These calculations refer to your specified settings in QuickLOAD 'Cartridge Dimensions' window.
C A U T I O N : any load listed can result in a powder charge that falls below minimum suggested
loads or exceeds maximum suggested loads as presented in current handloading manuals. Understand
that all of the listed powders can be unsuitable for the given combination of cartridge, bullet
and gun. Actual load order can vary, depending upon lot-to-lot powder and component variations.
USE ONLY FOR COMPARISON !
19 loads produced a Loading Ratio below user-defined minimum of 90%. These powders have been skipped.
Powder type Filling/Loading Ratio Charge Charge Vel. Prop.Burnt P max P muzz B_Time
% Grains Gramm fps % psi psi ms
--------------------------------- -----------------------------------------------------------------
Alliant Reloder-26 97.7 47.9 3.10 3957 99.8 59000 14912 1.015 ! Near Maximum !
Vihtavuori N570 109.3 52.5 3.40 3938 91.2 59000 15821 1.008 ! Near Maximum !
Alliant Reloder-25 106.4 48.2 3.13 3936 99.7 59000 14459 1.000 ! Near Maximum !
ReloadSwiss RS 70 95.7 46.5 3.01 3933 98.9 59000 14499 0.991 ! Near Maximum !
Norma MRP 98.6 46.9 3.04 3929 98.3 59000 14829 1.008 ! Near Maximum !
Alliant Reloder-16 93.6 41.6 2.69 3922 99.9 59000 13687 0.985 ! Near Maximum !
Vihtavuori N560 100.4 46.8 3.03 3917 95.1 59000 14908 1.001 ! Near Maximum !
IMR 7828 104.9 46.5 3.01 3915 95.7 59000 14567 0.990 ! Near Maximum !
IMR 7828 SSC 99.2 46.5 3.01 3915 95.7 59000 14567 0.990 ! Near Maximum !
Bofors RP30 108.6 49.5 3.21 3909 96.4 59000 14937 1.014 ! Near Maximum !
Norma MRP 2 108.6 49.5 3.21 3909 96.4 59000 14937 1.014 ! Near Maximum !
SNPE Vectan SP 12 103.0 50.1 3.25 3903 96.5 59000 14633 1.000 ! Near Maximum !
PB Clermont PCL 517 103.1 50.2 3.25 3903 96.4 59000 14647 1.000 ! Near Maximum !
ADI AR 2213 100.2 46.2 2.99 3899 95.6 59000 14378 0.987 ! Near Maximum !
Bofors RP5/NP ~approximation 100.7 46.4 3.01 3896 97.1 59000 14499 1.005 ! Near Maximum !
Alliant Reloder-22 100.7 46.4 3.01 3896 97.1 59000 14499 1.005 ! Near Maximum !
Raufoss RA15 100.7 46.4 3.01 3896 97.1 59000 14499 1.005 ! Near Maximum !
Winchester WXR 103.3 46.6 3.02 3893 97.0 59000 14486 1.006 ! Near Maximum !
Bofors RP15 103.3 46.6 3.02 3893 97.0 59000 14486 1.006 ! Near Maximum !
Accurate MAGPRO 100.5 48.7 3.16 3887 93.5 59000 14809 1.012 ! Near Maximum !
Alliant Reloder-23 103.1 46.0 2.98 3882 100.0 59000 13507 1.011 ! Near Maximum !
ADI AP 2214 103.9 49.2 3.19 3874 96.0 59000 14148 0.990 ! Near Maximum !
ADI AR 2209 97.2 44.1 2.86 3872 96.9 59000 13855 0.988 ! Near Maximum !
Somchem S365 94.9 43.0 2.79 3872 100.0 59000 12989 1.011 ! Near Maximum !
ADI AR 2217 109.2 49.2 3.19 3870 96.0 59000 14104 0.990 ! Near Maximum !
Hodgdon H1000 109.2 49.2 3.19 3870 96.0 59000 14104 0.990 ! Near Maximum !
ReloadSwiss RS 62 91.9 43.9 2.84 3868 99.7 59000 13631 1.015 ! Near Maximum !
Alliant Reloder-33 110.0 54.4 3.52 3867 91.1 57249 15366 1.027 ! Near Maximum !
PB Clermont PCL 511 90.3 43.8 2.84 3866 99.0 59000 13707 1.002 ! Near Maximum !
PB Clermont PCL 518 94.0 44.3 2.87 3865 98.7 59000 13751 1.002 ! Near Maximum !
Ramshot Hunter 93.3 43.9 2.85 3864 99.0 59000 13685 1.002 ! Near Maximum !
Ramshot Magnum 100.4 49.8 3.23 3862 98.0 59000 13883 1.004 ! Near Maximum !
Alliant Reloder-19 97.6 44.5 2.88 3862 97.0 59000 13886 0.996 ! Near Maximum !
Norma URP 93.0 41.9 2.72 3860 99.7 59000 13357 1.003 ! Near Maximum !
Bofors RP19 ~approximation 93.0 42.0 2.72 3860 99.7 59000 13352 1.004 ! Near Maximum !
Rottweil R905 101.9 46.1 2.99 3859 95.1 59000 14070 1.003 ! Near Maximum !
Vihtavuori N550 90.3 42.1 2.73 3855 99.7 59000 13442 1.008 ! Near Maximum !
Bofors RP14 ~approximation 98.3 44.8 2.90 3852 97.0 59000 13775 0.997 ! Near Maximum !
Accurate 4350 92.3 42.1 2.73 3852 99.8 59000 13396 1.022 ! Near Maximum !
Raufoss RA4 95.8 43.7 2.83 3843 96.7 59000 13584 0.994 ! Near Maximum !
Bofors RP4 ~approximation 95.8 43.7 2.83 3843 96.7 59000 13584 0.994 ! Near Maximum !
Norma 204 92.7 43.7 2.83 3843 96.7 59000 13584 0.994 ! Near Maximum !
Bofors RP5 NT ~approximation 103.6 48.1 3.12 3839 93.3 59000 13906 0.992 ! Near Maximum !
IMR 4831 97.5 42.6 2.76 3834 99.8 59000 13084 1.013 ! Near Maximum !
Hodgdon H4831 102.8 45.6 2.95 3825 94.8 59000 13544 0.994 ! Near Maximum !
Hodgdon H4831 SC 98.9 45.6 2.95 3825 94.8 59000 13544 0.994 ! Near Maximum !
Hodgdon Hybrid 100V 95.5 42.1 2.73 3821 100.0 59000 12428 1.002 ! Near Maximum !
Bofors RP4 NT ~approximation 93.5 43.3 2.80 3820 98.2 59000 13245 1.005 ! Near Maximum !
Somchem S385 97.8 45.1 2.92 3816 97.9 59000 13385 1.016 ! Near Maximum !
Lovex S070 92.8 41.8 2.71 3812 98.5 59000 13123 1.009 ! Near Maximum !
Rottweil R904 96.6 43.4 2.81 3810 95.7 59000 13228 0.993 ! Near Maximum !
Hodgdon Retumbo 110.0 50.4 3.27 3809 98.0 53151 14709 1.051 ! Near Maximum !
ADI AR 2225 110.0 50.4 3.27 3809 98.0 53151 14709 1.051 ! Near Maximum !
ReloadSwiss RS 80 110.0 54.4 3.52 3802 90.8 54504 15135 1.048 ! Near Maximum !
Bofors RP7 90.9 40.7 2.63 3800 97.8 59000 12921 0.998 ! Near Maximum !
Rottweil R907 90.9 40.7 2.63 3800 97.8 59000 12921 0.998 ! Near Maximum !
Winchester Supreme 780 96.3 46.3 3.00 3798 96.9 59000 13147 1.003 ! Near Maximum !
Accurate 3100 100.8 46.0 2.98 3796 99.0 59000 13131 1.032 ! Near Maximum !
Lovex S071 106.6 46.0 2.98 3796 99.0 59000 13131 1.032 ! Near Maximum !
Lovex S065 91.8 40.9 2.65 3796 99.2 59000 12747 1.005 ! Near Maximum !
Vihtavuori N165 102.9 46.4 3.01 3793 97.6 59000 13015 1.007 ! Near Maximum !
IMR 4955 Enduron 100.0 44.4 2.87 3791 95.1 59000 13139 0.993 ! Near Maximum !
Vihtavuori N160 103.0 45.0 2.92 3780 95.7 59000 12927 0.998 ! Near Maximum !
ADI AR 2218 110.0 53.4 3.46 3771 87.8 54054 15241 1.039 ! Near Maximum !
Somchem S361 95.4 46.3 3.00 3750 95.0 59000 12790 1.008 ! Near Maximum !
Vihtavuori 24N41 110.0 53.4 3.46 3732 83.5 57075 13611 1.018 ! Near Maximum !
Lovex D100 108.4 53.2 3.45 3707 85.6 59000 12890 1.013 ! Near Maximum !
IMR 7977 Enduron 104.3 47.0 3.05 3692 87.2 59000 12332 0.997 ! Near Maximum !
Vihtavuori N170 110.0 49.6 3.21 3676 88.4 55142 13168 1.055 ! Near Maximum !
Norma 217 110.0 49.4 3.20 3668 95.1 46895 14633 1.130
Hodgdon H870 110.0 51.8 3.36 3637 89.1 47788 14383 1.118
Alliant Reloder-50 110.0 54.2 3.51 3582 85.7 46138 14516 1.160
Bofors 12,7mmRA NC1214 Lot20115087 110.0 53.0 3.44 3514 77.5 48080 13379 1.159
Hodgdon US 869 110.0 53.4 3.46 3456 78.9 46204 12525 1.138
Hodgdon 50BMG 110.0 50.9 3.30 3454 74.2 45848 12486 1.134
Somchem 12.7-0 110.0 51.8 3.36 3408 74.4 46806 11646 1.122
SNPE Vectan SP 13 110.0 51.2 3.32 3375 82.7 41788 12370 1.197
Accurate 8700 110.0 52.3 3.39 3345 81.5 41388 12251 1.193
Vihtavuori 20N29 110.0 54.0 3.50 3311 78.4 40307 12230 1.222
PB Clermont PCL 513/520/9520 110.0 51.2 3.32 3284 79.3 39218 11926 1.233
NC A3502 ,test only 110.0 49.1 3.18 3026 54.5 35872 9132 1.267
TLP A 502(RH) ,test only 110.0 49.1 3.18 2991 59.0 33650 9630 1.305
V1734 7-multiperf ,test only 110.0 49.1 3.18 2146 26.8 18523 4458 1.680- Thread starter
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