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Old 11-14-2019, 06:13 AM   #26 (permalink)
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Join Date: Oct 2008
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Location: Michigan
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Quote:
Originally Posted by Texas97 View Post
I think you have an optimum velocity for a specific bullet design per expansion. Just like the subsonic loads have trouble with expansion because its velocity is too low to force bullet expansion/ deformation.

I believe there is an upper end on that as well.

Another example is people shot with pistol calibers at point blank range, bullet moves too fast, passes through unexpanded. It happens.
I watched a video a few weeks ago that addressed this issue for pistol caliber carbines. As you mentioned, faster is not alwayd better.

https://youtu.be/rxcFK3rcqU8
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Old 11-20-2019, 08:48 AM   #27 (permalink)
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Quote:
Originally Posted by ferg View Post
357 maximum https://en.wikipedia.org/wiki/.357_Remington_Maximum

Parent case .357 Magnum
Case type Rimmed, straight
Bullet diameter .357 in (9.1 mm)
Neck diameter .379 in (9.6 mm)
Base diameter .379 in (9.6 mm)
Rim diameter .440 in (11.2 mm)
Rim thickness .060 in (1.5 mm)
Case length 1.605 in (40.8 mm)
Overall length 1.990 in (50.5 mm)
Rifling twist 1 in 14 inches (360 mm)
Primer type Small rifle magnum - CCI BR4
Couple Errors in this load...

A CCI BR4 primer is NOT a magnum primer. The correct one if the spec requires a magnum would be a CCI 250.

The BR4 are a better grade of the 200 for Bench Rest style reloading. CCI does a fussier sort of the parts/materials of the 200 grade primers to meet the reliability specs or so the story goes. Makes for more consistent ignition and commands a tad higher price (about $1-1.5 for the std packages).

https://www.cci-ammunition.com/produ...imer_chart.htm

Secondarily while the parent Cartridge might be the correct, a .357 mag case is 1.29" but wont stretch to the the .357 max length of 1.6".

If one reads the wiki link one finds out that its an older wildcat for LR pistol silhouette and the only brass available is either Remington or Starline. That puts it in the same genre as the .30 and .357 Herrett rounds with the Herretts being easier to get cuz they are formed from .30-30 cases...

More topically a bit of data for comparison;
.350 Legend.
Bullet Diameter: .357 inches (All 350 Legend)
Shell Case Length: 1.71 inches (All 350 Legend)
Bullet Size: 180 grain
Muzzle Velocity: 2,100 fps
Muzzle Energy: 1,762 foot-pounds
Velocity (200 yards): 1,466 fps
Energy (200 yards): 859 foot-pounds

357 Magnum

Bullet Size: 158 grain
Muzzle Velocity: 1,830 fps
Muzzle Energy: 1,175 foot-pounds
Velocity (200 yards): 1,138 fps
Energy (200 yards): 454 foot-pounds
(Winchester Super-X, 158-grain jacketed soft-point)

Of interest to folks is that the 158 gr is not the classical FN geometry its actually a SP that Winchester developed for the cartridge which sort of changes things as far as ballistics and expansion are concerned. Something I might consider in my Herret loads as a sub for the FN Im currently using.
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Last edited by DavidVanVorous; 11-20-2019 at 09:31 AM.
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