N.Y. Yankee
32 Cal.
- Joined
- Feb 27, 2013
- Messages
- 602
- Reaction score
- 674
Recently, I was out with the GPR to test the reliability of 777 loads in the .54, mainly, for hangfires. The gun fires when it should but I did notice a lot harder recoil than I had remembered with FFg Goex, but it had been a little while since I had fired her. Later, I found the shots were hitting higher than I remembered with FFg. Still, not putting 2 and 2 together, I continued to fire about 24 shots at distances of 50, 75, and 100 yards, getting a couple of hangfires and consistently high impacts. Resolving to install a new front sight, I returned home to give her a good cleaning.
From then until just now, I had never seen any information on the power of 777 and loading recommendations. I had just loaded the 777 the same as FFg. It's a "black powder substitute" after all, right? Well, just now, I find out that you are supposed to reduce 777 loads 15 Percent! from Goex loads, because of 777's higher pressures. Now the light comes on and the higher recoil and much higher impacts makes sense! The max load for my 20 yr old GPR is supposed to be 100 gr (FFg?) So, am I loading the equivalent of 115gr 777? Am I going to blow up my gun? Am I in danger? The gun is in excellent condition and seems fine. It does not spit caps nor lock back on half cock when fired. I have not noticed any anomalies in the barrel or bore. So what can you tell me about this? I dont mind re-sighting the gun if the payoff is higher velocity with the .530 patched round ball, but not at the price of a blow up.
What do you know about the max charges for the .54 GPR? For now. I will revert to FFg in this gun.
From then until just now, I had never seen any information on the power of 777 and loading recommendations. I had just loaded the 777 the same as FFg. It's a "black powder substitute" after all, right? Well, just now, I find out that you are supposed to reduce 777 loads 15 Percent! from Goex loads, because of 777's higher pressures. Now the light comes on and the higher recoil and much higher impacts makes sense! The max load for my 20 yr old GPR is supposed to be 100 gr (FFg?) So, am I loading the equivalent of 115gr 777? Am I going to blow up my gun? Am I in danger? The gun is in excellent condition and seems fine. It does not spit caps nor lock back on half cock when fired. I have not noticed any anomalies in the barrel or bore. So what can you tell me about this? I dont mind re-sighting the gun if the payoff is higher velocity with the .530 patched round ball, but not at the price of a blow up.
What do you know about the max charges for the .54 GPR? For now. I will revert to FFg in this gun.