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The PPC case would hold considerably less powder than either of the two mentioned, so would not produce as much velocity as either, especially with bullets of substantial weight. I see no use for one given the existing cartridges.
dclark
dclark
Chamber and throat dimensions would be critical, but assuming we give you 33 grs water of useable case capacity, It is capable of 1730 fp of muzzle energy. Velocities are as follows:
85 gr, 3025
100 gr, 2790
120 gr, 2547
129 gr, 2456
140 gr, 2357
160 gr, 2205 fps.
To maintain the 30 gr H2O capacity of the case, COL would grow as weight goes up. This little number would need a 21 inch bbl for these numbers, and would work with IMR 4064 and powders of similar burn rate. To go past the 120 gr bullets, you need a 1:7 or twist rate to stabilize at these velocities.
The 140 and 160 weights need a long throat, and would make it difficult to reach the lands with the lighter bullets. Barnes X bullets might help here as they are very long for their weight.
I would rather size the throat for the Hornady 129 gr rn and lose capacity and velocity as weight is increased. The 129 would have an SD of .264 and penetrate well, while the 100 gr in the new Nosler partition is still .204 BC and about the same length.
Nice deer load, and still ok for Varmints with the Sierra 85 HP.
85 gr, 3025
100 gr, 2790
120 gr, 2547
129 gr, 2456
140 gr, 2357
160 gr, 2205 fps.
To maintain the 30 gr H2O capacity of the case, COL would grow as weight goes up. This little number would need a 21 inch bbl for these numbers, and would work with IMR 4064 and powders of similar burn rate. To go past the 120 gr bullets, you need a 1:7 or twist rate to stabilize at these velocities.
The 140 and 160 weights need a long throat, and would make it difficult to reach the lands with the lighter bullets. Barnes X bullets might help here as they are very long for their weight.
I would rather size the throat for the Hornady 129 gr rn and lose capacity and velocity as weight is increased. The 129 would have an SD of .264 and penetrate well, while the 100 gr in the new Nosler partition is still .204 BC and about the same length.
Nice deer load, and still ok for Varmints with the Sierra 85 HP.
1 - 3 of 3 Posts
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