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Sortt off topic, but since these are NOE bullets,and half the industry calling our slugs for AirGuns Pellets, I thought I would post a pic, and a thread I answered on the GTA
The Rainstorm shot well, VERY well with JSB’s but not so well with bullets. Once I found that the bbl. itself was very tight, ( bbl. .250/choke .251) I gathered up a bucket load of courage and cut and recrowned it.
The results were shocking. It went from a one holer at 36 yards with MK-II’s to literally pellet size hole. All thru the pellet sized hole!
Bullets were very inconsistent with the choke. Regardless of sizing. Once the choke was removed, the groups were good. Not stellar, but good, with far less fillers.
I hand lapped the bbl. and the groups got better. But still not what they could be.
Late yesterday evening, I fire lapped the bbl. starting with 220 grit, followed by 360 grit, and finally 600 grit.
this is done by rubbing the oil mix of grit on a precision steel plate, and using a second steel plate, rolling the bullet between the two plates, which pressed the grit into the bearing surfaces of the bullet.
Proper way to use it is 10 shots with 220, 10-20 of 360, and finally 20+ of the 600 grit. I was very low on the grit, so 10 or 220, 15 of 360 and 15 of 600 grit were used.
The .25 Storm with bullets was a fine 36 yard performer, and fair 50 yard performer, but not so good at 80 yards.
Today, the test shows it is now a Squirrel Killer at 80 yards. Success at last!
Used a 1″ target dot on my range, and the first NOE modded Ranch Dog, 50 grain bullet went exactly thru the tiny bulls eye of the target. Followed by two more tightly touching. Final two strung to the right. My bad, Seems I am too anxious to wait for the gust of wind to settle. GRRRR!
So here is something to think about. Choke at 80 yards, 8-9 inch groups. No choke ,2-3″ groups. Hand lapped, 2 to 1/2″ groups. Fire Lapped, under an inch at the same distance, same bullets.
Pictured is six shots of the 50 grainers, at apx 740 fps. ( Just received new hammer springs from Oneshot and the velocity jumped to 880 fps at lowest setting of adjustment from hammer spring screw). Have not tested accuracy yet with higher velocity. The bbl. is one in 14 twist, so should get even better with speed. FPPE jumped from 63-64 fpe to 86 fpe with nothing more than s simple spring change, Thanks to Oneshot.
Knife
Six Shots from magazine, first two thru the tiny bullseye at 80 yards. 6-8 SW Wind from left to right, with gust to 10-11 mph.