Tuning Prophet Standard 25 caliber with 177 barrel kit installed (impressed)

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airgunmike56

airgunmike56

Member
Aug 4, 2018
1,868
874
Odessa,Texas, United States
Installed a 177 kit in my Prophet, Did not adjust any power settings ,,, I was shooting 34 grain JSB at close to 920 FPS,,, With the 177 kit installed I shot a dime size hole at 49 yards at 1190 and 1200 FPS with JSB 10.34 I AM IMPRESED ,, I wished I had a longer range , I tuned it down with the hammer spring to 980 FPS

The regulator is set at 130 bar , I never have messed with it,,,

I did try some H&N 10.65 gr but it did not like the H&N pellets...

I bet the shot count is going to be crazy with this 530 cc bottle,, I got some slugs to try out but really no use and shot range I need 100 yards or more for the power house...
 
Yea, I should have noted that there was no wind to speak of dead calm, and the dime size hole was one magazine 15 shots, No flyers ,, I wonder if there 177 barrels have the same twist rate as there super duper long range 22 barrels, I will have to look into that ...

I am kind of home bound right now for medical reason, Or I would be at the big pit seeing what 150 yards looks like,,,

Mike
 
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