L
lead head
Guest
We will shoot a 3 card match Saturday 05/23/09 @6:00 pm
Larry
Larry
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an alternative browser.
You should upgrade or use an alternative browser.
P
Paul Bendix
Guest
Larry,
I hope you get more than three for your shoot.
I bought Joe's USFT and so far it only likes JSB 18.1 gr in .22 going between
770 and 780, 40 good shots from 1800 fill down to 1400. One 4500 fill will last me all year!! Will shoot it awhile before I try the .177 barrel.
What do you use for a starting torque # on the barrel bolts. What order do you torque them. I sent my $$ for the USFT Forum and hope they can help me out.
Paul
I hope you get more than three for your shoot.
I bought Joe's USFT and so far it only likes JSB 18.1 gr in .22 going between
770 and 780, 40 good shots from 1800 fill down to 1400. One 4500 fill will last me all year!! Will shoot it awhile before I try the .177 barrel.
What do you use for a starting torque # on the barrel bolts. What order do you torque them. I sent my $$ for the USFT Forum and hope they can help me out.
Paul
L
ldurham
Guest
Paul, yes we normally have between 6-8 shooters
I think we would be a bit crowded with more than ten, but would get by somehow I guess.
As to torquing the USFT barrel block. First, always have some pressure in the gun when you do final tightening, to establish the correct breech closing gap.
I tighten the non-clamp side first, around 15-17ftlbs, then slowly tighten the clamp side while seeing if I can twist the barrel ... when it just BEGINS to get tight, I push the barrel against the breechblock with it 3/4 closed, then tighten it about another half-turn. I used to use a torque wrench, but now mostly go by "feel" ... too loose an the barrel can eventually blow forward a little under firing pressure an leak at the o'ring while firing .... too tight an the barrel bore is "squeezed" a little an (might) affect accuracy.
I like to "clock", or register the barrel the way some rimfire guys do ... and feel mostly (but now always) that they usually shoot best when they are shooting at the lowest point. I usually try a barrel in each rotational quadrant for grouping once I've done about every other thing.
Theres over a thousand USFT related posts in that USFT club folder.
I think we would be a bit crowded with more than ten, but would get by somehow I guess.
As to torquing the USFT barrel block. First, always have some pressure in the gun when you do final tightening, to establish the correct breech closing gap.
I tighten the non-clamp side first, around 15-17ftlbs, then slowly tighten the clamp side while seeing if I can twist the barrel ... when it just BEGINS to get tight, I push the barrel against the breechblock with it 3/4 closed, then tighten it about another half-turn. I used to use a torque wrench, but now mostly go by "feel" ... too loose an the barrel can eventually blow forward a little under firing pressure an leak at the o'ring while firing .... too tight an the barrel bore is "squeezed" a little an (might) affect accuracy.
I like to "clock", or register the barrel the way some rimfire guys do ... and feel mostly (but now always) that they usually shoot best when they are shooting at the lowest point. I usually try a barrel in each rotational quadrant for grouping once I've done about every other thing.
Theres over a thousand USFT related posts in that USFT club folder.
L
lead head
Guest
usft
Paul,
The gun that I bought was already tuned to jsb 10.2 pellets by the person I got it from. I'll was going to say I would ask him because I know he had the 22 barrel on the gun.
I think that I may have more than three. Ten would be nice and I will shoot all that show up. I can probably handle 14 easy.
Please tell me more about the usft forum.
Thanks
Larry
Paul,
The gun that I bought was already tuned to jsb 10.2 pellets by the person I got it from. I'll was going to say I would ask him because I know he had the 22 barrel on the gun.
I think that I may have more than three. Ten would be nice and I will shoot all that show up. I can probably handle 14 easy.
Please tell me more about the usft forum.
Thanks
Larry
P
Paul Bendix
Guest
Lead Head,
I was away on vacation opening my summer place with no computer. USFT club is on the Delphi Forums Making Repairing and Collecting Airguns. It is L.D. forum. I believe LD sent you how to get to the forum.
LD,
Thanks for the information on how to change barrels. Will let you know how it shoots this weekend in N.H.
Paul
I was away on vacation opening my summer place with no computer. USFT club is on the Delphi Forums Making Repairing and Collecting Airguns. It is L.D. forum. I believe LD sent you how to get to the forum.
LD,
Thanks for the information on how to change barrels. Will let you know how it shoots this weekend in N.H.
Paul