Folks gearing up for the birth of Extreme Pistol Field Target in early June was excuse enough to get my Crosman customizing juices flowing (again). It occurred to me I already have a good candidate for make-over into an EPFT pistol, a lovely custom carbine cobbled together from Ebay purchases from sources far, wide, exotic, mysterious... and some, questionable! For instance, the gorgeous custom stock that I already glued back together once broke again as I was removing it; the stock-maker having used too light and weak wood for a gun stock. But I bet it will do a better job of burning in my fireplace!
Since the carbine had developed a slow leak anyway, I had good excuse to increase the reg pressure while going inside to fix the leak. Unfortunately I could get only a quarter-turn increase in the reg adjustment, not enough to achieve the 20 foot-pound EPFT power limit I sought from the 14-7/8" barrel whacked from an already whacked 16" Crosman barrel I had lying around (the EPFT barrel length limit being 15"). Chopping and re-crowning of the barrel went well enough that the finished pistol is shooting near 1" five-shot groups at 50 yards in incessantly gusty winds (since the carbine to pistol make-over).
A 220 BAR fill returns 38-40 well-regulated shots. 18.1 grain JSBs are the right ammo for EPFT.
18.1 grain FX (branded JSBs), 10 shot string- Low= 625, Hi= 630, ES= 5, SD= 1.4, Average= 626 FPS/15.8 Foot Pounds.
I can no longer find the source of the regulated PCP conversion kit used, but if it's any help the source is in Thailand (via Ebay at one time).
The broken stock maker is apparently still making beautiful stocks for airguns, hopefully now from woods suitable for the purpose. No, I don't recall the name.
Since the carbine had developed a slow leak anyway, I had good excuse to increase the reg pressure while going inside to fix the leak. Unfortunately I could get only a quarter-turn increase in the reg adjustment, not enough to achieve the 20 foot-pound EPFT power limit I sought from the 14-7/8" barrel whacked from an already whacked 16" Crosman barrel I had lying around (the EPFT barrel length limit being 15"). Chopping and re-crowning of the barrel went well enough that the finished pistol is shooting near 1" five-shot groups at 50 yards in incessantly gusty winds (since the carbine to pistol make-over).
A 220 BAR fill returns 38-40 well-regulated shots. 18.1 grain JSBs are the right ammo for EPFT.
18.1 grain FX (branded JSBs), 10 shot string- Low= 625, Hi= 630, ES= 5, SD= 1.4, Average= 626 FPS/15.8 Foot Pounds.
I can no longer find the source of the regulated PCP conversion kit used, but if it's any help the source is in Thailand (via Ebay at one time).
The broken stock maker is apparently still making beautiful stocks for airguns, hopefully now from woods suitable for the purpose. No, I don't recall the name.
