I contacted both Buffalo Bore and Randy Garrett to see what they had to say. This is what Tim Sundles of BB had to say....Quote:[Oh my gosh, do you honestly think I would recommend our 340gr. for the SBH if I had not fired it in a SBH extensively ?????
Feel free to us that load in your SBH. It will not harm your SBH.
Tim] And here is what Randy Garrett had to say: Quote[ Billy,
Buffalo Bore Ammo (BBA) uses a slightly heavier bullet, moving faster than our 330-gr +P Hammerhead Ammo, and seated deeper into the case (so that it can ostensibly be fired from the shorter cylindered Super Blackhawk). Those three characteristics result in higher chamber pressure than our ammo, yet they recommend their ammo for use in Super Blackhawks. Hmm.... I shoot Super Redhawks and Super Blackhawks and like them both, but would never subject a Super Blackhawk to the kinds of pressures associated with our 330-gr +P Hammerhead Ammo, much less another factory load that works at higher pressure. I have too much regard for my customers. This is simply a matter of judgment. As reported in Guns & Ammo Magazine, our 330-gr +P Hammerhead Ammo outpenetrates BBA's 340-grainer, and does so with less stress to the gun.
As to length and fit, yes, some Super Blackhawks will allow the cylinder to turn when loaded with our 330-grainer (many won't), but the ends of the cartridges are too close to the end of the cylinder for reliable function (given that all cast bullet ammo moves forward slightly during successive recoil pulses), and could bind the gun up. However, even more important than this is the issue of chamber pressure, and it is my view that Super Blackhawks, with their relatively thin chamber walls, should not be subjected to the kinds of pressures that typify +P loadings (much less +P+ loadings - BBA), and are only appropriate in the much stronger Ruger double-actions and Dan Wessons.
I hope this has been of some help. Thanks for your interest!
Best regards, Randy Garrett
http://www.GarrettCartridges.com NRA Life Member
Molon Labe
These are direct quotes from both companies that emailed me back. So, I think I will stick to Garretts 310 gr in my SBH. If anyone has a "spare" SBH that they would like to run a test on, please let me know the results. I don't want to risk it. Thanks to all, Billy.