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1/13/2019 11:08 AM
 

Some of you may find this info helpful. Today I ran several 357 mag factory loads through the chronograph. All were fired from my Ruger SP-101 4.2” 357 mag.

HSM Bear Load, 180 HArdcast - 3 shot Avg = 1100 fps 

Doubletap 200grain Hardcast - 3 shot Avg = 1275 fps

Conditions were 30 degrees F and overcast, humidity 93%, pressure 30.2 inHG. 

HSM claims 1200 FPS but I’m not sure what length barrel they use.  

Doubletap claims 1200 FPS from a 4” barrel.

I’ll be testing the Underwood Xtreme penetrator and 180 Hardcast as soon as I get some. 

 

 
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1/14/2019 5:27 AM
 

if you can, i'd be very interested in your  comments on both recoil and accuracy with the heavier loads

 
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1/29/2019 5:30 PM
 
I would be cautious with the HSM loads. We have been seeing a big decline in QC/QA with HSM lately. I have found rounds with no primer, rounds with no primer and no flash hole, dented rounds... oh, and a handful of blown up guns. This is with what HSM calls duty grade ammo.


 
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HomeHomeDiscussionsDiscussionsFirearms and Sk...Firearms and Sk...Chronograph results for SP 101 4” 357Chronograph results for SP 101 4” 357