Brand new Cesaroni 40 Cal 125gr FN Lead-Free Copper-Polymer Matrix Bullets
These are new bullets, manufactured by a Canadian defense company who specializes in lead-free projectiles for defense applications.
Tailored for training and close-quarter scenarios, these projectiles break apart on impact to reduce ricochet risk, minimizing hazards in confined spaces.
These bullets are 40 Caliber / 10mm, but measure slightly larger at .4025" +/- .001". We recommend using ample belling of your cases to reduce shaving of the composite material from the sides of the bullets. Greater variation within SAAMI spec ranges is typical of this bullet composition from what we've seen. Our extremely popular 9mm 94gr frangible (similar design) are actually undersized at roughly .353", and our first batch of Inceptor ARX bullets had many larger sizes. We've found after selling millions of this kind of bullet to many happy customers that prudent reloading steps and smart work-ups have produced many excellent and also incredibly economical specialty loads.
Loading data hard to find, working up loads in 10mm
I regret buying these. I love copper polymer bullets, but these were poorly designed. The lower density of copper polymer bullets makes them larger compared to fmj. This is always a hurdle when coming up with load data since the bullets fill up the case more, increasing the pressure. But with these for some reason the manufacturer made them .404 inch diameter, which also increases pressure. So you end up with a 125gr bullet that you can only load with fast burning powder to push at a velocity of a 180gr bullet. Which I guess is OK if thats what you’re looking for but I was hoping to get a range alternative for high velocity loads like the 93gr norma nxd or the 115gr lehigh defense. This is a swing and a miss for me. I will give the manufacturer kudos for an impressive weight consistency from bullet to bullet. I just wish they would have made this a 100 gr bullet with .4 or .401 inch diameter instead.
Economical practice ammo can be loaded with these bullets. Compared to cup and core bullets these are less expensive and produce reduced recoil both a plus to encourage trigger time. I got a FN 510 (10 mm Auto) about two years ago thinking it would be a good Whitetail hunting pistol. However with my practice to become proficient with the pistol I discovered that I really enjoy shooting this pistol. I use Lehigh extreme penetrator to hunt with which are 125 gr copper bullets and much too expensive to use as practice ammo. These 125 gr bullets have the same point of impact as my hunting bullets.