10mm-Auto

10mm Ammuntion => Factory 10mm ammo => Topic started by: Intercooler on June 23 2012 09:25:43 AM MDT

Title: Underwood Ammo New 155gr and 200gr results!
Post by: Intercooler on June 23 2012 09:25:43 AM MDT
    I didn't do a video because the spring in my mount broke. I also didn't do the Razorback because before I could put the first shot through I noticed the rear sight was loose. Should have Loctited it last time out but... oh well.

    The results should about finish up Kevin's complete line of 10mm offerings. Me personally, I think these are about Nuclear as one should go and be safe (at least feedback I plan to relay to Kevin). SwampFox had some great stuff that really was on edge and I think this lineup is there but with a safety buffer. Results:

Underwood 155gr TMJ (Match 4.75" barrel): 1620, 1593, 1591, 1607, 1603, 1578. Average = 1598.6 FPS/ 879.35 LBS. I predicted 1580, so this beat my guess.

Underwood 155gr TMJ (Hunter 6" barrel: 1695, 1703, 1653, 1653, 1642, 1638. Average = 1666.2 FPS/ 955.29 LBS. Nice gain!

Underwood 200gr XTP (Match 4.75" barrel): 1264, 1269, 1313, 1308, 1323, 1280, 1356, 1306. Average =  1302.38 FPS/ 753.11 LBS. Very nice work on this and now Glocks will see 1275 FPS consistent.
Title: Re: Underwood Ammo New 155gr and 200gr results!
Post by: highxj on June 23 2012 10:27:27 AM MDT
Yikes!  Lofty numbers there!  Why would any 10mm shooters who run factory stuff want to go elsewhere? Great numbers and reasonable prices.. All that's missing is a good hard cast heavy  8)
Title: Re: Underwood Ammo New 155gr and 200gr results!
Post by: Intercooler on June 23 2012 10:33:09 AM MDT
I do believe that is in the works with a good Barnes Copper as well.
Title: Re: Underwood Ammo New 155gr and 200gr results!
Post by: Turo on June 23 2012 10:35:24 AM MDT
How the heck are they getting 1590s out of a near stock length barrel?  I loaded up some 155 gr on top of longshot and haven't shot them yet, but I'm expecting to top out around 1400 from everything I've read.
Title: Re: Underwood Ammo New 155gr and 200gr results!
Post by: Intercooler on June 23 2012 10:43:04 AM MDT
Magic dust  ;D
Title: Re: Underwood Ammo New 155gr and 200gr results!
Post by: Turo on June 23 2012 08:45:27 PM MDT
Quote from: Intercooler on June 23 2012 10:43:04 AM MDT
Magic dust  ;D

Ahh yes, I've been meaning to pick some up lately. :P
Title: Re: Underwood Ammo New 155gr and 200gr results!
Post by: sqlbullet on June 23 2012 10:19:15 PM MDT
Man, those are some real numbers.  Maybe I should forgo loading my own and just get some 200 grain XTP's.