Our Bullets
Hammer Bullets® are custom turned on a CNC lathe, using only the highest-quality solid copper appropriate for the desired result. The Swiss style screw machines used in our shop are capable of holding extremely tight tolerance, allowing us to hold .0002″ variation. The result is an incredibly consistent product with unparalleled quality control.
Hammer Bullets® are available for both target shooting and hunting applications. We can quickly produce virtually any custom caliber and grain your rifle can support.
The hollow point and polymer tip designs, intended for big-game hunting applications, initiate expansion upon impact, shedding petals immediately, with the remainder of the bullet staying intact with a blunt front for optimal wound channel.
The design of Hammer Bullets® is the basis for US Patent # D774159….The shape and proportions of the bullet
Shop NowPDR – Parabolic Drag Reduction
The bearing surface of the bullet incorporates the patented PDR design (parabolic drag reduction). A continuous up and down curve, from the shoulder to the boat tail, reduces friction in the bore which equates to decreased pressure and the ability to achieve higher velocities. The PDR design on the bearing surface has proven to be very consistent and forgiving for the hand loader. Seating depth adjustment for accuracy has been unnecessary, making for much less time spent creating an effective load. Load development is as easy as shooting for velocity and then confirming point of impact.
Recommended Minimum Twist Rates
Each of our bullets has a required minimum twist rate that is calculated at sea level using the Miller Twist Formula. We use sea level as the standard to ensure that there is enough rpm’s for proper terminal performance. While the Miller Formula calculates stability for ballistic flight, we are most concerned with hunting performance and ensuring that there is enough stability for proper terminal performance. The required minimum twist rate is based on a gyroscopic stability factor (SG) of 1.5. An SG of 1.5 or higher is needed to achieve full bc value and expected terminal ballistics. In our impact testing for terminal performance, we have found that marginal SG (less than 1.5sg calculated at sea level) hinders a bullets ability to stay on track and open reliably for proper terminal performance. SG factor of 1.5 or higher will keep a bullet oriented point first on impact and promote proper deformation of the frontal area for good terminal performance. We have never seen a downside to running with a faster twist than the minimum required twist. Infact extra stability is always a good thing. When referring to a rifles twist rate, note that a 1-8″ twist is faster than a 1-10″ twist.
If hunting at low elevation and cold temperatures it is recommended to run faster than minimum required twist rates. Hunting with less than listed minimum twist rate can result in poor terminal performance and should not be done.
Ballistic Coefficient
We have determined that our bc ratings will be listed in G7 form. G7 form is for use with pointed, boat tailed bullets. G7 bc values have much less dependence on velocity and remain accurate throughout the flight of bullet as it slows down. G7 bc values remain constant regardless of the starting muzzle velocity. We will always give bc data intended to help our customers get on target at distance. We will never inflate our bc values in order to look better. Whenever possible we will list bc values calculated on our own testing using drops shot at long range. Some of our bullets will be listed with an estimated bc value. This will always be conservative. Our bc values will be listed as Calc, Est. Always remember that bc can be effected by twist rate, individual rifles, and atmospheric conditions. So we recommend shooting at different ranges to verify your drops. Our goal is to make this as easy as possible by giving a bc value that is accurate.
Load Development
Lead Free
Types of Hammer Bullets®
Hammer HHT™ is our line of polymer tipped bullets. After a year of extensive testing on animals around the world for proper terminal performance, we launched the line of HHT’s summer of 2023. The Hammer HHT™ has proven to be our most effective hunting bullet yet. This is saying something since we set the standard with our previous lines of bullets. Along with improved terminal performance they add some additional ballistic coefficient as well as protection of the meplat from accidental damage from rough handling of ammunition in the field, that could cause poor terminal performance. The added durability and stellar terminal performance are all the reasons needed to upgrade your ammunition to the Hammer HHT® line of bullets.
Stone Hammer™ are our line of bullets that we designed for normal range hunting, where bc is inconsequential. So for most cartridges 400y or less. The Stone Hammer™ line is approximately an 80% weight retention bullet that has a larger hollow point for super quick opening on game with high retention for long straight penetration.
Hammer Hunter® line is our long range or high bc line of bullets. This was the original line of bullets. These bullets all have 1.5mm hollow point and are typically 60%-70% weight retention. There is no drop off in terminal performance from the Stone Hammer™. The only difference that we see on game is the Stone Hammer™ will open up slightly quicker. We designed the Hammer Hunter™ with the 1.5mm hp as it was the smallest that we could get reliable expansion. We tried 1mm hp but it would not always do what we wanted on game. Failure is not an option. As far as we know there is no report of a failure of the Hammer Hunter™ to expand on game. There is always that chance and the larger hollow point on the Stone Hammer™ reduces that risk.
Absolute Hammer™ are very similar to the Hammer Hunter™ bullets with the same 1.5mm hollow point and the same basic form. We designed the Absolute Hammer™ so that it can not be engraved on the ogive of the bullet. The only part of the bullet that encounters the barrel is the PDR drive bands. This greatly reduced the engraving pressure of the bullet which in turn increased the potential velocity in most cartridges. Because of the very low engraving pressure the Absolute Hammer™ do not line up well with conventional bullet loading data. They should only be loaded by expert reloaders that are capable of working up a load without any supporting data.
Target Hammer™ are pretty self explanatory. Non expanding bullet designed for shooting targets not game.
All of the Hammer Bullets™ that are designed for hunting are impact tested down to 1800 fps impact velocity for proper deformation. We have not been able to impact a Hammer Bullet™ at too high of an impact velocity. They will retain the same weight at low and high velocity impacts.