Member
Join Date: Dec 2012
Posts: 44
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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
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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
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switched to 80gr round nose
PW8 3800 fill 962,953,941,935
PW8 3800 fill 953,953,935,922
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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.
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