416 Rigby Cast Bullet Load
#1
Giant Nontypical
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Join Date: Feb 2003
Location: Texas - BUT NOW in Madison County, NY
Posts: 6,270
416 Rigby Cast Bullet Load
Think I've found an acceptable cast bullet load for my CZ 416 Rigby. It consists of 112 grains of AA8700, the BULL SHOP .417" diameter 350-grain flatnose gascheck bullet with a Brinell hardness of 22, what appears to be NRA-type ALOX lube, with Federal 215 primers in Jamison cases. MV was 2100 fps average. Tried 100 grains too. This 100-grain load gave 1950 FPS, was less accurate, and gave some hangfires. No hangfires with 112 grains, though!
#3
Giant Nontypical
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Join Date: Feb 2003
Location: Texas - BUT NOW in Madison County, NY
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RE: 416 Rigby Cast Bullet Load
Agreed, it is very close to .45/70 performance. (Nothing wrong with that!!) But it gives me a relatively low-cost round for practicing with the .416, whereas jacketed slugs for this beast are pretty expensive!! These only cost me $20.00 for 100, instead of $23.00 for 50 of the cheapest jacketed bullet, the 350-grain Speer Mag. Tip.
#5
RE: 416 Rigby Cast Bullet Load
That load should out penetrate anything else you could shoot in it except maybe the solids. The 45-70 with hard cast bullets will out penetrate the 458 Win, 458 Lott and the 460 Weatherby. Tests show that velocity below 2000 fps is optimum. Starting at about 1600 fps. This is for basic non-expanding cast bullets. In fact the 45-70 in tests by Garret, penetrates 50 percent more.
Velocities above this point start to expand the bullet and starts to curve its path thus limiting expansion. When using flat point bullet with a large Meplate, tissue damage is massive without the high velocity.
Velocities above this point start to expand the bullet and starts to curve its path thus limiting expansion. When using flat point bullet with a large Meplate, tissue damage is massive without the high velocity.
#6
#7
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Join Date: Feb 2003
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RE: 416 Rigby Cast Bullet Load
ORIGINAL: bigcountry
Thats pretty awesome. I am just shocked it takes so much powder to burn.
Thats pretty awesome. I am just shocked it takes so much powder to burn.
#8
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RE: 416 Rigby Cast Bullet Load
ORIGINAL: James B
That load should out penetrate anything else you could shoot in it except maybe the solids. The 45-70 with hard cast bullets will out penetrate the 458 Win, 458 Lott and the 460 Weatherby. Tests show that velocity below 2000 fps is optimum. Starting at about 1600 fps. This is for basic non-expanding cast bullets. In fact the 45-70 in tests by Garret, penetrates 50 percent more.
Velocities above this point start to expand the bullet and starts to curve its path thus limiting expansion. When using flat point bullet with a large Meplate, tissue damage is massive without the high velocity.
That load should out penetrate anything else you could shoot in it except maybe the solids. The 45-70 with hard cast bullets will out penetrate the 458 Win, 458 Lott and the 460 Weatherby. Tests show that velocity below 2000 fps is optimum. Starting at about 1600 fps. This is for basic non-expanding cast bullets. In fact the 45-70 in tests by Garret, penetrates 50 percent more.
Velocities above this point start to expand the bullet and starts to curve its path thus limiting expansion. When using flat point bullet with a large Meplate, tissue damage is massive without the high velocity.
Thanks for the article. Sounds like I need to SLOW THAT BULLET DOWN to optimize its' performance as far as penetration goes, as the current Mv is 2100 FPS. However, since it doesnot have a particularly efficient form being a blunt flatnose, perhaps by the time it has reached the 100-yard marker, it has slowed enough. I don't know the B.C. of this bullet. I guess I COULD put the Chrony at 100 yards and see what happens! I haven't shot the Chrony yet, and it is about time for a new one anyway!!
#10
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RE: 416 Rigby Cast Bullet Load
Its kinda like when a diver jumps in a pool from 5ft. He goes a certain depth. But if he jumps from 100ft, then surface tension of the water changes in porportion with the force impacted even though the diver Friction coef doesn't change.
But I am not so sure with a barnes solid thats the case however.
But I am not so sure with a barnes solid thats the case however.