Air Gun Forums
Home | About Us | Contact Us
Quick Member Login:
Forgot password?
Forum Sponsors:
Left Advertisement

becomeasponsor
Forum Statistics:
Forum Members:
Total Threads:
Total Posts:


There are users
currently browsing forums.
You don't appear to be registered. Click here to register
Search the forums:

Air Gun Forums » Air gun Alley » Air Force guns » Condor SS .257 with 29" barrel

Reply
 
Thread Tools Display Modes
Old 04-10-2017, 10:05 PM   #1
Cricket
Member
 
Join Date: Dec 2012
Posts: 44
Default Condor SS .257 with 29" barrel

condor ss .257 project 29

installed 29" TJ barrel with RL shroud. Had to use 3 bushings as shroud is for 700mm barrel. Using my modded valve on a standard tank recessed the return spring for TH clearance and ported valve stem.

Using Stock Hammer and Spring with 2 stock weights 83grams

PW 6/8 Max power with this set up is 952FPS with 80gr Lyman round nose 3800 fill

PW5 3800 fill 80gr 942,942,932

PW4 3800 fill 60gr 811,830,889,904,930,955,970,979,989,979,973,964,95 5,905,914

PW0 3300 fill 60gr 880,922,953,965,968,962,950,950,936,893,881,870
------------------------------------------------------------------------------------------------------------

So I made a heavier hammer out of some brass 85.8grams using Stock spring and 73gr lyman 420 FN I am getting these numbers

PW0 3400fill 915,954,947,941,921,905

PW4 3400 fill 934,952,933,911

PW4 3800 fill 902,937,971,953,936,921
__________________________________________________ ______________________

switched to 80gr round nose

PW8 3800 fill 962,953,941,935

PW8 3800 fill 953,953,935,922
------------------------------------------------------------------------------------------------------------

Started to do some accuracy testing so far the accuracy is good dime sized groups are attainable at 60yrds, using 73gr 420 FN mold

Gun is reasonably quite with RL Shroud.
Attached Thumbnails
Click image for larger version

Name:	IMG_20170410_170251_684[1].jpg
Views:	124
Size:	95.0 KB
ID:	145   Click image for larger version

Name:	IMG_20170409_100522_744[1].jpg
Views:	123
Size:	94.6 KB
ID:	146  
Cricket is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT. The time now is 05:00 AM.
Powered by vBulletin® Version 3.8.5
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd. Copyright 2011 Airgunforums.org, All Rights Reserved