Originally Posted By: poorcountrypreacher
Originally Posted By: joshm28
Here's a good rule of thumb

Muzzle Velocity above 3300fps = Mono Bullets

Muzzle Velocity between 3000-3299fps = Bonded Bullets

Muzzle Velocity below 3000fps = any big game bullet


Of course this is MY rule of thumb and based on MY research and real world testing. But...there is a lot of truth to the above. The faster the bullet the more violent the entry. At 3300+ the Ballistic Tips have a higher probability of coming apart too quickly. At .308 speeds, or equivalent they can be absolutely devastating. Choose your bullets based on speeds in which you are pushing them.


I agree completely with your conclusions, though all of my experience with bullets faster than 2920 is based on what other people were using. I don't own any rifles faster than a .308 or 30/06. I have never hunted game bigger than deer and I don't hunt where I can see over 400 yards, so I have no use for anything bigger. My uncle had his 300 Magnum for a caribou hunt, and I think he developed a flinch from shooting the thing and has never been a good shot since.

The first deer I shot with a NBT was sometime in the early 90s. I saw a buck walking across a cutover at 180 yards and had to take a quick shot before he got across. He went out of sight at the shot and I didn't know if I had even hit him until I got there. I caught him high in the shoulder and had a fist sized entry with a small exit. I wish I had made a pic; it was the most devastating wound I've ever seen from any gun. A deer has no chance of surviving a hit like that.

So I then loaded some 120g NBT to shoot out of my 7x30 Contender at 2400 fps. I killed several deer with it, and then lost one of the biggest bucks I've ever seen on our place. He was directly facing me when I shot him, and I tracked blood the rest of the day and never recovered him. I switched to a 130g bonded bullet after that and never lost another one. If I'd been using that to start with I have no doubt the deer would have dropped on the spot.

An NBT is a great deer bullet in 30 caliber below 3000, but it's a bad choice in dinky calibers or at higher speeds.


The deer you lost wasn't because you shot a BT. You likely got off center and just clipped part of a lung or maybe just got shoulder. Yes,a better penetrating bonded or mono bullet might have helped if you were at an angle to reach other vitals after more penetration. That BT however acted just like about any cup and core bullet would have with that shot. A core lokt or inter lock may have done the exact same.

It also depends on which one you are shooting. A 120 grain 7mm Nosler BT is a very tough bullet. It was toughened to knock over silhouette targets for those guys when they complained about it.

In general however I do agree with the speed assessment.

Last edited by R_H_Clark; 11/15/17 07:58 AM.