So here is the deal. I have a Magnum Research .454 that has had a bisley hammer and Reeder gun fighter grip frame added to it. In addition, the barrel has been shortened to 4 5/8. To make a long story short, I am just now learning the virtues of big bullet low velocity. In the past, I have primarily shot the hornady 240 GR XTP/MAG factory loaded ammunition out of it. I realize it isn't the optimal "bear round" but I got a slew of them for dirt cheap and the gun shoots them well so I have stuck with them. Now, my question is why would this revolver being showins signs of high pressure with this load?https://www.hornady.com/shop/?page=b...oduct_sku=9148
I sent the gun back to Gary Reeder who did the custom work and had him check the cylinder and frame for major issues. He checked it on the lathe and said it is in good condition still but I need to knock off the high pressure loads. Are these rounds considered high pressure?
The signs that I am seeing on the revolver that indicate high pressure are that the cylinder is expanding enough to come into contact with the frame while shooting. One can visibly see where the cylinder has come into contact with the frame. In addition, Gary said that the "silver" lines running perpendicular along the top and bottom inside the frame indicate high pressure. The funny thing is that I haven't really had "sticky" extraction. The only other issue is that the little v spring in for the loading gate has jumped out of alignment more than once causing the gun to lock up. Gary sent me out a new spring from Ruger that is supposed to take care of that issue and so far it has.
The revovler is from the old DM line that Magnum research first started out with. They are supposed to be pretty much identical to the early freedom arms and Ruger blackhawk frames. Anyways, anyone got a clue as to what is going on here?