Starlings! A self-renewable target for all to enjoy!

  << Previous Topic | Next Topic >>Return to Forum  

.25 cal. LBT chrony results 500cc Sumatra

July 31 2012 at 2:51 PM
sub-sonic  (Login sub-sonic)
from IP address

Just got my sumatra back from Will Piatt.With a 3000psi.fill the 52gr sfn.253 bullet shot up to 900fps,can anyone tell me how many foot pounds that is?????? He also got my trigger down to 2 pounds,great job!

 Respond to this message   
(Login tedd)

Use this calculator...

July 31 2012, 3:01 PM 

 Respond to this message   
(Login Tofazfou)

900x900x52/450400=93.5 FPE!

August 1 2012, 12:09 AM 

 Respond to this message   
(Login sub-sonic)

Thanks for the info

August 1 2012, 1:53 AM 

These bullets make the Sumatra a real powerhouse!

 Respond to this message   
(Login Tofazfou)

Your welcome. 93 FPE is nothing to sneeze at for sure.

August 1 2012, 10:04 PM 

You can take a lot of game with that kinda power

 Respond to this message   

Pedro 1
(Login prfleetsvs)

Summatra .25

August 22 2012, 2:54 PM 

My .25 Sumatra is headed my way after being massaged by Will Piatt. Will also recommended the .53 grain flat nosed slugs for max power.
With a 3,000 psi fill, how many good shots are you getting with no change in POI on your Sumatra?
Thanks for the info.


 Respond to this message   
  << Previous Topic | Next Topic >>Return to Forum  
Find more forums on ShootingCreate your own forum at Network54
 Copyright © 1999-2017 Network54. All rights reserved.   Terms of Use   Privacy Statement