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Old 08-20-2010, 10:42   #1
thegriz18
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Chrono Data for Fed. 135 HST

I saw it on here a while back but can't find it. A few people had posted velocities for this round. Everything seemed to range from 1150 to 1240fps. If you have that info please post it!

Thanks!
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Old 08-21-2010, 13:29   #2
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tnoutdoors9 on you tube is where you want to look. He did a test on the 135gr hst (xm40HA). wet newspaper pack and 4 layers of denim he got 11" pen. and .69 expansion with 1152 FPS. he also has a test of the 180gr hst and he got 16" pen. and .72 expansion. Hope this helped.
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Old 08-21-2010, 13:35   #3
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Quote:
Originally Posted by wruckis View Post
tnoutdoors9 on you tube is where you want to look. He did a test on the 135gr hst (xm40HA). wet newspaper pack and 4 layers of denim he got 11" pen. and .69 expansion with 1152 FPS. he also has a test of the 180gr hst and he got 16" pen. and .72 expansion. Hope this helped.
Thanks. I watched that video. I've seen the velocities on this load go from 1150 to 1240 fps.
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Old 08-22-2010, 14:52   #4
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Someone had velocity readings for this round and others up a while back with this round coming in at 1240fps. I think it was from a G22.
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Old 08-22-2010, 15:15   #5
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If you go to post #3 in this other forum thread you can read about the .40 135gr load requirements (and some other info which might be interesting to you).
http://www.m4carbine.net/showthread.php?t=59411

You'll notice in section 3.18 that it requires an average velocity of a 10-shot group to be 1,200 +/- 40 FPS in order to meet spec.
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Last edited by fastbolt; 08-22-2010 at 15:16..
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Old 08-22-2010, 16:38   #6
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Thanks Fastbolt. That's some good information. I have about 80 rounds of this stuff. I'm trying to determine if it is suitable carry ammo. I'm on the fence about it. IMO, a 135 at 1220fps is a pretty warm load. All of the internet velocities I've seen on this load are in the 1150 fps range. That's why I was looking for that older post in CC with the velocity in the 1240fps range. I need a chronograph, and a place to use it.

I wonder if someone could buy 135 hst bullets and load them to 1275fps, maybe a company like Cor-Bon. I doubt Federal would sell the bullet though.
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Old 08-22-2010, 18:41   #7
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You're welcome. I came across the linked material and thought it might be interesting to some folks who only had access to informal, "backyard" type testing and who might not know how the actual specifications for that limited production load.

While you're probably always going to find the folks who promote LIGHTER/FASTER in the .40 S&W, I wouldn't be at all surprised to see the major LE/Gov users eventually come full circle and decide the 180gr bullet weight is about optimum for this caliber.

Maybe not from the perspective of sheer muzzle blast effect and felt recoil, or calculated muzzle energy or FPS, or even how well some users might be able to effectively use and control the often harder recoiling, lighter weight loads because of their training/practice, but from the perspective of looking at how the 180gr load can deliver acceptable ballistic performance, and without excessive wear and tear on either the shooter and the platform compared to some of the hot-rodded lighter bullet weight loads.

The 155gr loads were found to be somewhat rough on guns and some shooters.

The 165gr loads have found favor with some users, granted, but the 180gr loads seemed to have demonstrated the ability to work well enough across a broad spectrum of user needs.
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Last edited by fastbolt; 08-22-2010 at 18:43..
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Old 08-22-2010, 19:00   #8
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I am a big fan of the 165 grain weight in 40SW. It gets good penetration and expansion as well as a lot more velocity than the 180 offerings. I think that 180 is better suited to full power 10mm loads.
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