More Tin in the Hunting Alloy - Postscript

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  • Last Post 13 June 2025
Wilderness posted this 06 June 2025

A friend was obliged to consign a broken-legged cow to The Great Beyond. We did however ensure that she would have an afterlife. I rigged her with a Browning game camera and a solar powered security light, as described in a recent post.

https://forum.castbulletassoc.org/thread/a-shot-in-the-dark/

This is of course a story of shooting (more) pigs with hard hollow point cast bullets from the Savage 1899 .30-30. Mostly it happened at night with Oneleaf NV100 attached to Leupold scope.

This is a continuation of a test using more tin and less antimony in the hunting alloy (earlier post). As near as I can get with the calculator, the new alloy is about 5% tin and 6% antimony, so just a bit harder than Lyman #2. Hardness as tested is still the same as the old alloy (16 BHN), but there is a possibility that the pattern of bullet breakup may differ. Casting is excellent, with very few seconds.

https://forum.castbulletassoc.org/thread/more-tin-in-the-hunting-alloy/

The aim this time was to clean up a bunch of pigs, taking note of bullet performance along the way.

A feature of shooting with NV is that there is a complete whiteout after the shot, mostly from IR light reflecting back off powder and bullet smoke. Movements of survivors after the shot are lost in the whiteout. One shot per arrival is therefore typical.

The mission began with a full moon, so the approaching hogs were clearly visible from the “blind” (Isuzu Dmax with camo netting) 60 meters away. As the moon became later and less, range was closed up to 35 meters.

The first night out, which was night four for the cow, produced five boars before midnight, and a total of nine pigs for the outing. Bullet performance was perfect when shot placement was correct. All boars went straight down with forward shoulder shots. This was with the full load of LVR (175 gns bullets at 2300 fps). The illustration shows four of the boars where they fell. The fifth was close by but not in the image. The largest boar was 60” from snout to butt of tail. A large sow shot later at the carcase was hit in the ribs and went about 100 meters.

 

 

 

The birds are Torresian Crows and Wedge-tailed Eagles. The eagles are particularly adept at finding freshly shot pigs – I think they follow me around. Sea Eagles are occasional visitors as well.

The next image is of a sow from a later excursion, another one hit too far back – she ran 50 meters and piled up in some weeds. This is a reminder that not every shot is perfect, and not every shot is a knockdown. On pigs it is VERY easy to let the aim drift too far back. As rib shots go however, this one would have been acceptable in daylight when the run could be observed.

 

 

 

A few nights later this young boar came in. With this shot placement he went straight down. This is back to the 2200 fps load, but I doubt he noticed.

 

 

 

The last night of shooting on this cow was night 19. Tally for the night was three boars and two sows. The sows were a double (images). One went straight down while the other ran about 100 meters. That’s still a pretty good recommendation for these hard HP bullets. The boar on the left of the image was shot a week or so later at another site. The sow on the right is still at large.

Waiting for the double:

 

 

 

Lined up:

 

 

Blam:

 

 

Hog tally for the “life” of the cow was 24.

I still consider these 175 gn 16 BHN cast HP bullets better for pigs than jacketed bullets, whether 150 or 170 grains. As for increasing the tin part of “non-lead”, if there is a difference in effectiveness, then I am not seeing it.

P.S. This is a better view of the boar at the other site where he eventually came undone:

 

You are only as good as your library.

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Wm Cook posted this 06 June 2025

Thanks Bill. I’m sure you’ve covered this in the past but could you post a png of the bullet (s) you’re using and what mold you’re using. Bill.

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Wilderness posted this 06 June 2025

Bill

Bullet is #U321297HP (that's right - .32 Special) sized down from .322" to .312" in three steps. Lube and gas check in Lyman .323" die, then size sequentially in Lee .314 and .311 dies. With springback it comes out .312" on the body and .3125" on the gas check. Nose is slightly rounded from sizing with RN top punch for better feed in Savage 99.

The recovered bullet is from a diagonal shot through a big hog. Mostly the bullets go right through.

The last group (5 shots) I fired at 100 meters with the full load went 2288 fps and 2.91", so don't think you can't size them down. No good for competition of course, but plenty good enough for Core Business.

You are only as good as your library.

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Shopdog posted this 06 June 2025

Nice write up. And cool pics.

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Larry Gibson posted this 06 June 2025

Once again, very well done.

Note; I have similarly sized down 323471 HPs for use in .31 cal rifles [7.65s, 303s and 7.7s] with .312 - .316  groove diameter barrels.  I size, GC and lube them in a .325 H&I and then size again in Lee push throughs.of .318, .316, .314 and .312 to get the desired size.  The Lee's started as a s.311 for the .312 and a .314 for the other sizes and honed out to the desired size. Makes for great hunting bullets in those rifles.  

LMG

Concealment is not cover.........

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Wilderness posted this 13 June 2025

Thanks Larry.

I stumbled on this trick (by accident almost) way back when I still followed Col Harrison's line that all sizing damaged bullets. It was the Lee push through sizers that made the difference.

The other little trick that goes with it, as per your practice as well, is getting the grease on to the bullet before sizing. This preserves the grease grooves, apparently at full dimensions.

A second trick for gas check bullets is to scrape the bases flat - pits don't matter, but getting rid of high sprues is important. The gas checks on say .32 bullets when sized down to .30 will dimple in the middle. If the base is scraped clean this dimple will be central. If there is some raised sprue under the gas check the dimple will be off centre or not round. It probably doesn't affect the shooting much, but the bullets look better when done properly.

Combine our capacity to size cast bullets down with our other capacity to paper patch them up, and we can make cast bullets for just about any oddball. And we can widen the uses to which some moulds can be put.

You are only as good as your library.

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