Finally made it to the range for my first chrono session. Baselined my GP100 and BlackHawk with some factory 100AE's and then checked
out some H110 and PP-300-MP handloads. The H110 results are pretty much repeats form earlier posts so these will serve as additional
data points for you guys and extra experience for me.
(Altitude: 300', Chrono distance: 10', Temp: 40F, Pressure: 30.06)
Factory Ammo (100AE):
GP100 - (1579, 1614, 1642, 1604, 1544, 1534) 108fps delta, 1586fps avg, 559ft*lbs avg
BlackHawk - (1687, 1660, 1705, 1713, 1709, 1675, 1683, 1716) 56fps delta, 1694fps avg, 637ft*lbs avg
Handloads (COL 1.450", XTP 100gr, CCI400, Fed plain brass):
H110 (12.8gr)
GP100 - (1268, 1283, 1224, 1284, 1304, 1259, 1293) 80fps delta, 1274fps avg, 360ft*lbs avg
BlackHawk - (1349, 1324, 1344, 1384, 1378, 1377, 1380) 60fps delta, 1362fps avg, 412ft*lbs avg
H110 (13.0gr)
GP100 - (1236, 1291, 1285, 1254, 1244) 55fps delta, 1262fps avg, 354ft*lbs avg
BlackHawk - (1324, 1326, 1383, 1384, 1336) 60fps delta, 1350fps avg, 405ft*lbs avg
PP-300-MP (12.8gr)
GP100 - (1194, 1176, 1247, 1158, 1189) 36fps delta, 1193fps avg, 316ft*lbs avg
BlackHawk - (1241, 1265, 1282, 1298, 1311) 70fps delta, 1279fps avg, 364ft*lbs avg
PP-300-MP (13.0gr)
GP100 - (1110, 1135, 1258, 1178, 1178) 68fps delta, 1152fps avg, 295ft*lbs avg
BlackHawk - (1230, 1288, 1279, 1288, 1324) 94fps delta, 1282fps avg, 365ft*lbs avg
I used the Handloader issue 274 Alliant Power Pro 300-MP example 327 loads posted earlier in this thread as my 300-MP load template. These loads
are not officially published therfore use them with CAUTION and at your own RISK. The roll crimp was set similar to factory Federal
AE100 ammo. Not sure if this qualifies as a heavy crimp which is preferred for H110 loads? None of these laods showed signs of over
pressure. The factory 100AE definitely leaves the spent brass looking like they ventured the closest to the gates of hell! The fastest
BlackHawk AE100 round was 1716fps or 654 ft*lbs. The Fastest GP100 round was 1642 or 599 ft*lbs. All of the handloads turned out to be
pretty light and the state of the brass was much more benign.
Speer lists the H110 load range for use with their 100gr Gold Dot Hollow Points using Federal 205 small
rifle primers as:
http://www.speer-bullets.com/pdf/327...File_Final.pdf
http://www.speer-bullets.com/pdf/327...8_DataFile.pdf
100gr GD "H110 13.0 1377 14.0C 1502"
These numbers are for the 3" SP101 which are higher than the results with my 5.5" BlackHawk! The only difference between my 13.0gr H110 loads and the
equivalent Speer load are the CCI400 small rifle primers, XTP 100gr projectile, and perhaps my crimp. I guess as long as the XTP 100gr holds together I
can load beyond the Hodgdon 327 100gr XTP H110 stated max load of 13.2gr? Speer goes to 14gr compressed with the 100gr GD. I'll tread carefully here.
http://data.hodgdon.com/cartridge_load.asp
"100 GR. HDY XTP Hodgdon H110 .312" 1.450" 12.2 1419 31,400PSI 13.2 1525 38,500PSI"
I have no idea how Hodgdon got their H110 results or what barrel length they used?
From the Handloader tests and Sevens results I'll bump up the 300-MP loads and chrono the results. Also I'll enhance the crimp for
both the H110 and 300-MP loads to ensure proper ignition.
Update:
I missed that the Speer H110, 100gr GD loads have a COL of 1.465. The Hodgdon H110, 100gr XTP loads call out a COL of 1.45". I have some Speer 100gr GD's so I'll try these for H110 and then stick to published loads.