Heavy Cast Subsonic Bullets (500 grain) Range Report

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Re: Heavy Cast Subsonic Bullets (500 grain) Range Report

Postby Rklenke » Tue May 07, 2019 7:47 pm

I finally got out to shoot a few more of the cast heavies at 100m, about 30 or so. I ran some at the post-PC size of .454 and some I sized again back down to .452. I'm settled on sizing twice, once before, and once after PC. Mostly pictures on this post, but 29.3 grains of Shooters World Blackout gave perfect cycling on all but 2 shots of the 28 I loaded up (still using a 1oz buffer). I should have shot paper for a real group, but I only had my steel. Also, these things hit like a hammer, check out the log a bullet traveled all the way through, stopping with the base forward.
454.png
454.png (118.74 KiB) Viewed 424 times


452.png
452.png (111.54 KiB) Viewed 424 times


Sized to .452 then PC (finished at .454)
IMG_20190507_172141275-436x581.jpg
IMG_20190507_172141275-436x581.jpg (108.44 KiB) Viewed 424 times


Sized to .452, PC'd, then sized again to .452
IMG_20190507_173238004-436x581.jpg
IMG_20190507_173238004-436x581.jpg (91.35 KiB) Viewed 424 times
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Re: Heavy Cast Subsonic Bullets (500 grain) Range Report

Postby Rklenke » Tue May 07, 2019 7:51 pm

Log was shot at 50 meters

Front view of the bullet entry into log
IMG_20190507_173134818-436x581.jpg
IMG_20190507_173134818-436x581.jpg (116.99 KiB) Viewed 424 times


Top down view showing the width of the log
IMG_20190507_173121974-436x581.jpg
IMG_20190507_173121974-436x581.jpg (118.68 KiB) Viewed 424 times


Bullet came to rest under the bark
IMG_20190507_173157760-530x707.jpg
IMG_20190507_173157760-530x707.jpg (75.7 KiB) Viewed 424 times


Pulled bullet
IMG_20190507_173543637_HDR-436x581.jpg
IMG_20190507_173543637_HDR-436x581.jpg (86.29 KiB) Viewed 424 times
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Re: Heavy Cast Subsonic Bullets (500 grain) Range Report

Postby Hoot » Tue May 07, 2019 8:45 pm

Good Grief, I would have expected more deformation after all that! :shock:

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Re: Heavy Cast Subsonic Bullets (500 grain) Range Report

Postby Rklenke » Tue May 07, 2019 8:49 pm

Hoot wrote:Good Grief, I would have expected more deformation after all that! :shock:

Hoot


I know right? Especially after doing a 180 degree flip in a fairly dried out log (fell during Hurricane Florence). Maybe some day I'll open it up with a chain saw....
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Re: Heavy Cast Subsonic Bullets (500 grain) Range Report

Postby Rklenke » Wed May 08, 2019 10:13 am

The primers of the .452 sized rounds looked more or less normal. Some of the primers of the .454 size rounds were flat. Its hard to tell on the low quality photo.

452 sized
fired cases 452.jpg
fired cases 452.jpg (97.32 KiB) Viewed 407 times


454 sized
Fired cases 454.jpg
Fired cases 454.jpg (99.13 KiB) Viewed 407 times


I'm also pretty set on opening up my gas port diameter. Has anyone done it with a hand reamer? I don't want to use a hand drill with a drill bit and I don't have a drill press. Just looking for any tips out there.
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Re: Heavy Cast Subsonic Bullets (500 grain) Range Report

Postby Hoot » Wed May 08, 2019 12:24 pm

Rklenke wrote:...snip...
I'm also pretty set on opening up my gas port diameter. Has anyone done it with a hand reamer? I don't want to use a hand drill with a drill bit and I don't have a drill press. Just looking for any tips out there.


With a set of sharp numerical bits and a drop of oil, you can open it up with a hand drill as long as you have somewhat of an eye for a right angle, move one number at a time and don't shake like Don Knots. This allows you to actually experiment right at the range, assuming its not overly restrictive. Sure saves time running back and forth from home. Though the change is very minimal from one number to the next, I do advise cleaning the bore and retesting after each increment. That will keep the size change down to just what is needed to get the job done.

I won't bother repeating all the advice about what constitutes a need for a port diameter change versus proper break-in and lubrication. That has been plentifully shared around here already and anyone considering enlarging their port should have already read it. IE Enlarging the port diameter is the last resort to a cycling issue.. I've had to do it once, when all else had failed, on a rifle length gas system, for use with fast, 200gr bullet recipes. Repeat: Last Resort.

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