My followup video on tuning my Snowpeak M60B after I have converted it from .22 to .25cal.
Everything was going smoothly at the beginning with decent looking groups after I had increased the Reg pressure from the factory's setting. I was able to shoot the NSA 26.8 gr slug into tight groups out to 30 yards. But things turned to s@it when I began to adjust the HS, looking to gain more FPS. My cocking lever failed and the sear disengaged with result unknown to me. My mind wasn't clear at the time with what was happening and I mistakenly loaded 2 slugs into the chamber without realizing what I had done. My mind was so preoccupied with tuning the gun for an optimal speed with REG/HS combination, I loaded another slug into the chamber again.
What a terrible and dumb mistake I made. I finally got the gun to cock and squeezed out a shot. Ouch, three slugs got squeezed out the barrel and landed just below the target box. Only then did I realized what I had done. That should never had happened considering I am not a rookie, but through mental lap, it happened.
I was glad the slugs didn't get jammed inside the barrel. Subsequently, I think my gun was affected by that mistake of mine and I didn't get any good groupings afterwards.
I continued to test and tune the gun by raising the REG to 150 Bar and tuning the HS back and forth. Eventually I think I got the gun to shoot okay again with some hole in hole shots. I stopped my tuning for the day and went home.
Tuning for slugs is difficult and time consuming. Mistakes were made and lesson was learned. But I will continue until I get the result I want to be able to shoot tight 5 shots groups out to 75 yards with the right size/weight of slugs at the adjusted REG/HS setting. The coyotes are waiting for me.
It is a long video, but hopefully some of you will find it useful and entertaining. Enjoy.
Everything was going smoothly at the beginning with decent looking groups after I had increased the Reg pressure from the factory's setting. I was able to shoot the NSA 26.8 gr slug into tight groups out to 30 yards. But things turned to s@it when I began to adjust the HS, looking to gain more FPS. My cocking lever failed and the sear disengaged with result unknown to me. My mind wasn't clear at the time with what was happening and I mistakenly loaded 2 slugs into the chamber without realizing what I had done. My mind was so preoccupied with tuning the gun for an optimal speed with REG/HS combination, I loaded another slug into the chamber again.
What a terrible and dumb mistake I made. I finally got the gun to cock and squeezed out a shot. Ouch, three slugs got squeezed out the barrel and landed just below the target box. Only then did I realized what I had done. That should never had happened considering I am not a rookie, but through mental lap, it happened.
I was glad the slugs didn't get jammed inside the barrel. Subsequently, I think my gun was affected by that mistake of mine and I didn't get any good groupings afterwards.
I continued to test and tune the gun by raising the REG to 150 Bar and tuning the HS back and forth. Eventually I think I got the gun to shoot okay again with some hole in hole shots. I stopped my tuning for the day and went home.
Tuning for slugs is difficult and time consuming. Mistakes were made and lesson was learned. But I will continue until I get the result I want to be able to shoot tight 5 shots groups out to 75 yards with the right size/weight of slugs at the adjusted REG/HS setting. The coyotes are waiting for me.
It is a long video, but hopefully some of you will find it useful and entertaining. Enjoy.
