For those of you who've loaded for the 45lc Buff Classic

[R.W.Dale]

 I noticed awhile back on this forum that some experimentation had been done shooting Spitzer .451 diameter ML bullets in the 45lc handi. Does anyone have any information on what the ballistic coefficient is on the 250grn Hornady SST?

http://www.midwayusa.com/eproductpage.exe/showproduct?saleitemid=375313&t=11082005

[quickdtoo]

The Hornady web site lists BCs and SDs for most of their bullets and ammo, click view ballistics to see it, that one is .210.

Tim

 https://www.hornady.com/shop/?page=ballistics/popup&product_sku=67272

https://www.hornady.com/shop/?ps_session=f36f4e78bb96932441b1f8c4ecf9d942&page=shop%2Fbrowse&category_id=fb73b4b3a3f422cdff2546992d2a2166

[R.W.Dale]

 Thanks for the quick reply quick, I had looked and I don't know why but I couldn't find what you've posted..... Thanks!

[R.W.Dale]

 Interesting, given the rather low BC of .210 there appears to be no point in loading one for the polymer tipped bullets VS a somewhat heavier hollow point handgun bullet such as the 300grn XTP mag. I figured on the SST having at least a .250 BC

[quickdtoo]

Yeah, it's probably a waste in the 45Colt, but in your 460, the 300gr with a .250 BC, may provide some benefit. Beside, they do look kewl!!!

Tim

[R.W.Dale]

Yeah, it's probably a waste in the 45Colt, but in your 460, the 300gr with a .250 BC, may provide some benefit. Beside, they do look kewl!!!

Tim

 I dunnknow. I have a few of the 250sst's and a bunch of 300grn XTP mags. I'll crunch the numbers and see what quickload has to say on the matter before I order some 300grn sst bullets

[quickdtoo]

The other issue would be the terminal performance of the SST, the XTP mag is built better, I'm sure.

Tim

[quickdtoo]

Here's some Sierra Infinity numbers for the 250gr XTP and 250gr SST using the velocity I get with the 250gr Speer GDHP. I used a 150yd zero cuz the SST does provide a respectable difference in trajectory and energy over the less efficient XTP in the same weight, at least theoretically, it will be interesting to see what the reality is.

Tim

Trajectory for Hornady (45 cal) 250 gr. HP/XTP Long Colt at 1900 Feet per Second
At an Elevation Angle of: 0 degrees
Ballistic Coefficients of: 0.146   0.146   0.146   0.146   0.146
Velocity Boundaries (Feet per Second) of: 1900  1900 1900 1900
Wind Direction is: 0.0 o'clock and a Wind Velocity of: 0.0 Miles per hour
Wind Components are (Miles per Hour): DownRange: 0.0   Cross Range: 0.0   Vertical: 0.0
Altitude: 0 Feet with a Standard Atmospheric Model.
Temperature: 59 F
Data Printed in English Units
Range   Velocity   Energy   Momentum   Drop   Bullet Path   Wind Drift   Time of Flight
(Yards)   (Ft/Sec)   (Ft/Lbs)   (Lb-Sec)   (inches)   (inches)   (inches)   (Seconds)
0   1900.0   2003.6   2.11   0.0   -1.5   0.0   0.000000000
25   1775.7   1750.1   1.97   -0.31   0.86   0.0   0.040834270
50   1657.6   1524.9   1.84   -1.32   2.52   0.0   0.084555090
75   1546.1   1326.8   1.72   -3.12   3.4   0.0   0.131412350
100   1442.3   1154.5   1.60   -5.82   3.36   0.0   0.181649288
125   1347.0   1007.0   1.50   -9.57   2.28   0.0   0.235478205
150   1261.3   882.9   1.40   -14.52   0.0   0.0   0.293048348
175   1186.5   781.3   1.32   -20.84   -3.65   0.0   0.354398156
200   1123.4   700.4   1.25   -28.7   -8.83   0.0   0.419410965
225   1071.5   637.2   1.19   -38.28   -15.74   0.0   0.487825033
250   1028.7   587.4   1.14   -49.75   -24.54   0.0   0.559303185



Trajectory for Custom Hornady (45 cal) 250 gr. SST at 1900 Feet per Second
At an Elevation Angle of: 0 degrees
Ballistic Coefficients of: 0.21   0.21   0.21   0.21   0.21
Velocity Boundaries (Feet per Second) of: 1900  1900  1900 1900
Wind Direction is: 0.0 o'clock and a Wind Velocity of: 0.0 Miles per hour
Wind Components are (Miles per Hour): DownRange: 0.0   Cross Range: 0.0   Vertical: 0.0
Altitude: 0 Feet with a Standard Atmospheric Model.
Temperature: 59 F
Data Printed in English Units
Range   Velocity   Energy   Momentum   Drop   Bullet Path   Wind Drift   Time of Flight
(Yards)   (Ft/Sec)   (Ft/Lbs)   (Lb-Sec)   (inches)   (inches)   (inches)   (Seconds)
0   1900.0   2003.6   2.11   0.0   -1.5   0.0   0.000000000
25   1813.0   1824.3   2.01   -0.31   0.64   0.0   0.040410915
50   1728.8   1658.9   1.92   -1.28   2.12   0.0   0.082775723
75   1647.7   1506.9   1.83   -2.98   2.88   0.0   0.127215091
100   1569.9   1367.9   1.74   -5.48   2.83   0.0   0.173850143
125   1495.7   1241.6   1.66   -8.86   1.9   0.0   0.222799891
150   1425.3   1127.5   1.58   -13.21   0.0   0.0   0.274174654
175   1359.1   1025.3   1.51   -18.64   -2.97   0.0   0.328070501
200   1297.5   934.4   1.44   -25.24   -7.12   0.0   0.384560653
225   1241.0   854.7   1.38   -33.13   -12.55   0.0   0.443683287
250   1189.8   785.7   1.32   -42.43   -19.4   0.0   0.505428702