GTA
All Springer/NP/PCP Air Gun Discussion General => PCP/CO2/HPA Air Gun Gates "The Darkside" => Topic started by: Joshua on March 21, 2015, 12:34:20 PM
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Hey all I have a bit of a problem I think and I hope you guys can guide me in the right direction.
I have a disco in .22. Massaged trigger, spring adjuster, cut 5/8" off of and recrowned the barrel, bnm breech/shroud.
I just recently got a chrony...and it seems to be shooting a bit weak. 18.13g jsb pellets at 700fps at best. Is that a bit low? It also seems to have become pellet picky and accuracy has lost its consistency. The bnm stuff was the last modification. But to be fair it was shooting 1 1/4" groups at 50yds just after the shroud install, but I have no idea how fast.
I have a few suspicions but I'd rather not mention them in order to get clean info from y'all.
I need to get my confidence back in this rifle before the upcoming turkey season. Any help is greatly appreciated!
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I suspect the BNM bolt probe. There have been reports of flow restrictions in that area. Have not heard ie they have addressed that complaint.
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Has anyone figured a workaround?
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Have you an LDC on it? They rarely add to accuracy.
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Have you an LDC on it? They rarely add to accuracy.
If properly/installed made they don't hurt it.
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It may be the TP. I have talked to others with a BNM and they took a 1/4" drill bit and opened up the transfer port in the breech and then went with the 1/4" vinyl tubing, fixed the issue.
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X2 on thr transfer port. Check well for leaks with tissue test upon completion.