Tiborasaurus Rex - About Bullet Design and Applications

Below is a 30-minute video from Tiborasourus Rex with an in-depth discussion about various long-distance bullet designs including our ALCOs. It is a narrative about how to go about choosing the right bullet for the proper application. The review talks about long range bullet dynamics for target shooting, hunting and tactical applications with a comparative analysis about bullet trajectories available on the market. He talks about advantages and disadvantages with respect to shape, tip and weights.  

The video was Published on Nov 2, 2016 – Thank you.

Link: https://

Tiborasaurus Rex - Long Range Bullet Review  Video

The video image on the Left is a decision from Tiborasaurus Rex. He does a comparative analysis of various 168 grain .308 caliber bullets to determine the best choice for long distance shooter applications. He presents  a review of manufacturer's out to 1,500 meters with ultra-low drag match style bullets. The ALCO Precision .308 168 Grain rebated boat tail with aluminum tip with ballistic coefficients in the 600s performance stacks up well against the competition. 

 Link to Short Video: 

Tiborasaurus Rex – ALCO Bullets and Long Rang Technologies Compared July 2, 2018 

Below are links and a summary from T Rex videos from July of 2018. It pulls all of the reviews above and a few more and summarizes his findings in the content. We appreciate his comments and welcome your questions. Thank you. 

What bullets have the highest ballistic coefficients (BCs)? In the video attached below, Rex compares long range rifle bullets such as the Berger VLD, Sierra Matchking, the Hornady A-Max and the Nosler LR Accubonds. If an ultra long range bullet with a high BC is needed to maximize your effective supersonic range, there is some interesting technology to consider. The ULD bullet concept was developed during the Viet Nam era for both long range military sniper operations and later, applied to experimental bullets for Secret Service assignments. Some of the characteristics of Alco’s ULD or Ultra Low Drag design were also incorporated in a similar but later development called the VLD or very low drag design. Both designs are equivalent for all practical purposes, except that the full ULD specification includes a rebated boattail design instead of the standard boattail (for about 15% gain in a accuracy by reducing muzzle-blast induced dispersion: the RBT step deflects most of the muzzle blast gas in a ring whereas the conventional BT tends to focus it into a ball in front of the emerging bullet, adding about 15% to the dispersion or random buffeting of the projectile.)


Long Range Bullets: Technologies Compared –

Long Range Bullets: 7mm Comparative Analysis ~

Long Range Bullets: Maximize your .308 Winchester’s Potential –

Long Range Bullets:  Rex’s TOP Picks –

Alco Bullets – Quick Overview:

Alco’s Ultra Low Drag or ULD bullets use both a rebated boat-tail and a 14-caliber secant with a .014-inch offset from tangent, to achieve minimum air resistance for a given weight and caliber.

Using the aluminum tip gives you approximately 0.50 thousandths longer bullet and will shift the weight to the rear of bullet and adds to the BC. The steel tip is used for thick skin animals and any rough service apps, like removing bullet from rifle several times a day. Steel tip work well if you have to have a shorter OAL bullet because some barrel twist rates won’t stabilize a longer bullet.

The Ultra Low-Drag design projectiles are very streamlined with a long nose and we use either mild steel or aluminum for the Ballistic Tip that intersects the body of the projectile. This does 2 things: One, it increases the Ballistic Coefficient of the projectile, and two it allows the tip to be pushed into the body of the projectile for maximum expansion when hunting game animals and is utterly devastating on Large Game.

The Rebated boat tail or (RBT) is a hybrid between the accurate flat base projectile and the long range stability of the traditional boat tail projectile. In turn, you get the best of both worlds, and when combined with the ULD design and longer ballistic tip, you get one of the most accurate projectiles.

Enrique Lopez, December 2018

ALCO Bullets would like to thank Enrique Lopez for sharing two photos of the deer he shot with the .308 bullets in a 155 grain weight. People often ask us about how our bullets work on game. As you can see, the exit wounds are pretty big. The bullets expand and are effective on game. We are very appreciative of the note Enrique sent to us below:

“Attached (above) you will find the two pictures from the deer taken in Georgia with my .308 and your Alco 155 grain Bullets. They performed excellent. The first doe was shot at 40 yards and ran only 20 yards, the second is a young buck shot at 105 yards which collapsed at the shot. Both bullets exited leaving a nice exit hole making it very easy to find the short 20-yard blood trail the doe left. I am extremely happy with the results. Keep up the good work!”

Steve Moneypenny

ALCO Alpha Hunter .452 Smokeless Muzzle Loader 325 grain  
Facebook December 5, 2019

ALCO Bullets would like to thank Steve Moneypenny for testing our bullets and posting the following on the FB Smokeless Muzzleloader Shooters Group:  
“Bill Shepek from Alco bullets was nice enough to send me some bullets to try out and today was supposed to be nice with winds light and variable. The only thing variable were the gusts. Just had to work between it all. Alco's wed site is a click and ship so no calling involved to order. Bill is a standup guy to work with.
First up was the 325 grain 12 ogive Alco Alpha Hunters. .014 jacket thickness. All targets at 300 yards.
Gun is Sav/Brux 1:20” 26” barrel with Direct Ignition. 
Optics are Sightron SIII 6-24X50mm.
Scope had been zero’d at 100yd with both the 325’s and 300’s last month. Interestingly enough both bullets with the charges used zero’d the same which is highly convenient. Dialed up approx. 5 MOA for 300 yard targets. (20 inches)
325 grain Alco Alpha Hunter
80gr H322 
No wad
Bullets sized at approx. .44970
#1. 2779 fps
#2. 2825fps
#3. 2811fps
#4. 2775fps
#5. 2758fps
#3 and #4 were adjusted 2 clicks to left, the #5 was adjusted to right one click but hit low. I am positive that was my fault. I only had two 325's left so I stopped. Want to save those for a kill.

Bottom pic is 300yd target

Second up was the 300 grain Alco Precision .020 jacket thickness
Same bullet size settings #1 thru #3. On #4 and #5 snugged setting up to .44985 and shots tightened up. I have found once bullet and charge combo have been determined bullet sizing is key to fine tuning.
300gr Alco Precision 12 Ogive
70gr IMR4198 
#1. N/A
#2. 2795fps
#3. 2780fps
#4. 2809fps
#5. 2813fps
I believe these bullets are capable of much better groups. I know I could get better, but every shot is a dead deer.”