This morning I wanted to put to rest the actual BCs for some of the new polymer-tipped bullets....
These BCs are calculated using actual velocities taken using identical Pro Chrono chrnongraphs at zero and 100yds. All bullets were fired from the same Savage 10ML-II stainless/laminate. All velocities were measured using the same charge of 40gr SR-4759. The listed BC is an average of 3-shots/readings. I tried to keep all factors as close to being the same as possible....
The BCs are closer than you may think!
The "players" from left to right:
T/C 250gr Bonded Shockwave, Barnes 250gr T-MZ, Traditions 275gr T-Shock XLR, T/C 300gr Bonded Shockwave, Knight 290gr USS-PTBT, Barnes 285gr Spit-Fire.
From lowest to highest:
250gr Bonded Shockwave- 0.197
250gr TMZ- 0.207
275gr T-Shock XLR- 0.214
275gr Barnes XBP- 0.224 (added 06/28/06)
300gr Bonded Shockwave- 0.239
290gr TMZ- 0.240
285gr Spitfire- 0.251
I included the 285gr Barnes Spitfire because it has always given me some of the highest BCs around for a .45cal bullet. It still is the BC champ.
These BCs are calculated using actual velocities taken using identical Pro Chrono chrnongraphs at zero and 100yds. All bullets were fired from the same Savage 10ML-II stainless/laminate. All velocities were measured using the same charge of 40gr SR-4759. The listed BC is an average of 3-shots/readings. I tried to keep all factors as close to being the same as possible....
The BCs are closer than you may think!
The "players" from left to right:
T/C 250gr Bonded Shockwave, Barnes 250gr T-MZ, Traditions 275gr T-Shock XLR, T/C 300gr Bonded Shockwave, Knight 290gr USS-PTBT, Barnes 285gr Spit-Fire.
From lowest to highest:
250gr Bonded Shockwave- 0.197
250gr TMZ- 0.207
275gr T-Shock XLR- 0.214
275gr Barnes XBP- 0.224 (added 06/28/06)
300gr Bonded Shockwave- 0.239
290gr TMZ- 0.240
285gr Spitfire- 0.251
I included the 285gr Barnes Spitfire because it has always given me some of the highest BCs around for a .45cal bullet. It still is the BC champ.