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SBR 240 JHP Chrono Results

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jw4570 View Drop Down
Callahan's Auto Mag
Callahan's Auto Mag


Joined: 08 Mar 2008
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Post Options Post Options   Thanks (0) Thanks(0)   Quote jw4570 Quote  Post ReplyReply Direct Link To This Post Topic: SBR 240 JHP Chrono Results
    Posted: 09 Nov 2017 at 12:02am
Everyone,

I fired the SBR 240 gr JHP ammo in 3 different length Automag Barrels, 6.5, 8.5, and 10.5.  The 8.5 and 10.5 are non-vent rib barrels.  For fully disclosure, the 8.5" is Magnaported, the others are not.  All were TDE era barrels fired on TDE frames.

Results in feet per seconds (fps) (sorry Luc and our metric friends), 5 shots each barrel

6.5" Vent Rib
1372
1341
1390
1371
1368
Average is 1368.4

8.5" (Magnaported, non vent rib)
1459
1444
1443
1470
1454
Average is 1454

10.5" Non Vent Rib
1529
1562
1528
1555
1546
Average is 1544

So it looks like 2" gets you about 90 fps.

Obviously this is from a single box, a single lot, and is not any kind of representative sample.  It's just to give everyone an idea of where the velocity is.  The 6.5 and 8.5 barrel functioned great, the 10.5 not so much, but I really don't shoot that 10.5 barrel much and I don't remember if it functioned with the same loads or not.  I just shot it for the velocities.  The 6.5 is my shooter.

Just FYI

Jason




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Luvz2Shoot View Drop Down
Callahan's Auto Mag
Callahan's Auto Mag


Joined: 16 Apr 2011
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Luvz2Shoot Quote  Post ReplyReply Direct Link To This Post Posted: 09 Nov 2017 at 1:33am
Thank you for the info. and the post.
If you were happy and you knew it, would you clap your hands?
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desertmoon View Drop Down
International Auto Mag
International Auto Mag


Joined: 25 Mar 2016
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Post Options Post Options   Thanks (0) Thanks(0)   Quote desertmoon Quote  Post ReplyReply Direct Link To This Post Posted: 09 Nov 2017 at 3:11am
Great to know!!!  Thank you!!!
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