Originally Posted by phorwath
Scott E and IdahoRedneck,
Short answer is I don't have the answers to Scott's great questions for several reasons.
My thoughts: I won't be able to determine if the hollow-pointing improves the odds of expansion any time soon, because the vast majority of VLDs seem to expand as intended. And I don't kill enough animals to reach a confident conclusion any time soon. Going about it on my own WILL require a large number of game animals killed to determine if the hollow-pointing eliminates the incidents of non-expanding bullets.
I'll report on my findings with the meplat trimmed and hollow-pointed VLDs, but only after I've reached some fairly confident conclusions. I think I'll be able to discern and calculate a reduced BC. But the reduction in BC has already been fairly closely determined in the past from other shooters' reports (~2%, but it's dependent on how much tip is shaved off the bullets). I'm not confident I'll be able to reach conclusions on the other items of interest anytime soon...
I shot my first big game animal with meplat trimmed and hollow pointed Berger 210 VLDs last weekend. I used the Kevin Cram manufactured Meplat Uniforming and Hollow Pointing tools, as described earlier in this Thread. The animal was an ~ 350lb bull caribou. I thought it would take some time to determine what effect this bullet modification would have on bullet expansion characteristics. I was wrong. The increased rate of bullet expansion was so obvious on this bull, that I'm confident in stating the meplat trimming and hollow-pointing greatly increases the rate at which these modified VLDs expand on game.
Following are a number of photos showing the damage to the entry side of this caribou. The bullets entered the right side of the bulls ribcage, and exited the left side of its ribcage. The bullet damage on the entry side is visible in these photos, to an extent I've never experienced with factory Berger 210 VLDs out of my 300 Win Mag. I shared these photos with 'Broz
' since he's examined many more big game animals harvested with the factory 210 VLDs. He said he's never seen entry side blood shot damage like this on any of the big game he's seen harvested with unaltered factory Berger 210 VLD bullets.
The bull was up-slope 20 degrees from my position. The first hit was at 500 yds. The second hit was at a distance of 535 yds. MV = 2936 fps. One bullet slid between the ribs. One directly impacted a rib, and the entry side damage from the bullet that struck the rib was obviously greater than from the bullet that missed the ribs. I believe the bullet that hit the rib exited in two pieces, because it struck closer to the shoulder than the other bullet and the two-hole exit is closer to the shoulder on the exit side of the ribcage.
Here's the photos I took while field butchering this bull:
Entry side after trimming away some of the worst blood-gelling right next to the bullet holes.
After further trimming away of blood shot meat.
After trimming away of blood shot meat is complete. Two bullet entrance holes are clearly visible now. The one on the right struck the rib just off the tip of the knife blade.
Entry holes viewed from inside the ribcage.
Exit holes viewed from the inside wall of the far side ribcage.
Exterior of offside ribcage prior to any trimming of blood shot meat. The damage to the exterior of the offside ribcage was more substantial than the damage to the exterior of the entry side ribcage.
Any questions - ask.