jpickar said:
To say any revolver is better than a 12 ga. is ignoring reality....Here again is another case of armchair quaterbacking without any experiance.
No need to get personal. Let's stick to the topic and leave the personal comments out of it. I'd be elated to see somebody prove me wrong with "experience". What is yours? How many bears have you killed with 12ga slugs?
jpickar said:
Who cares about sectional density with a 12 ga slug???? It is big it is moving and it will destroy tissue. All bear encounters and shootings are at close range. The slug is more forgiving and will penetrate at close range. It doesn't matter what the projectile looks like at 20 yards.
This is my point exactly. The 12ga slug survives by legend alone. This is equivalent to "it works because I say so". Cut the rhetoric, speculation and secondhand nonsense and let's get to where the metal meets the meat.
It ain't magic, gents. We know what works, we know how it works and we know why it works. The testing doesn't lie and even the USFS testing shows 12ga slugs as dismal compared to better rifle cartridges. Don't rely on what you've heard regurgitated a hundred times, use your brain. Look at your average Foster type slug. It is soft, swaged lead, has a great hollow cavity in the base and has a sectional density comparable to a 165gr .45 bullet. It doesn't take a brain surgeon to figure out that you need a harder material, heavier weight and thus higher sectional density to penetrate deeply and break large bones. Would you use a 165gr .45 bullet against big bears? Probably not.
Moving up to the Black Magic, we have a harder cast slug but the sectional density is still dismal at .161. Comparable to a 200gr .44 or 225gr .45. Would you use either for big bears??? Probably not.
See where I'm going with this?
Move up to the best of the 12ga slugs, those from Dixie. Even the mighty 730gr is only equivalent to 250-260gr .44 or .45 bullets. Sounds like a good deer, elk and moose load to me but nothing bigger and certainly nothing that bites back. The massive 870gr with an SD of .233 is comparable to a 300gr .44 or 335gr .45. Now we're finally getting to acceptable SD's for large, heavy, dangerous game. Let's not forget about that recoil. Forget about a follow-up shot.
Still not up to the penetrating capability of the big 355gr .44, 360gr .45, 430gr .475 with SD's in the .254 to .274 range.
Think about the classic stopping cartridges, they all have one thing in common, heavy for caliber, toughly constructed bullets. All have very high sectional densities.
Such as:
.375H&H 300gr = .305
.450/.400 400gr = .338
.458Win 500gr = .341
.470NE 500gr = .318
See a pattern forming here?
We know what these bullets do and through Linebaugh's penetration testing, we know how the various big bore sixgun loads compare. They compare quite favorably. One of the deepest penetrators in his testing was the 430gr .475 at 1272fps, which exited on 64" of wet newsprint. Similar performance was turned in by the 500gr .500Linebaugh, which startlingly, has an equivalent sectional density. It is no surprise that in penetration testing, the Dixie slugs compared almost identically to sixgun loads using hardcast bullets of comparable sectional density moving around 1200fps.
Now look at the vaunted 12ga slug:
1oz (437.5gr) = .117
1 3/8oz Black Magic (601gr) = .161
Dixie 730gr = .196
Dixie 870gr = .233
So if we know that it takes a toughly constructed bullet with a high sectional density to penetrate deeply and break large bones,
by what magic does a 12ga slug with its soft construction and pitiful sectional density accomplish the same thing? Wishful thinking???
Linebaugh's penetration testing.
http://www.handloads.com/misc/Linebaugh.Penetration.Tests.asp?Order=5