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08/10/2021

hasler bullets logo

Load Data for Hasler Bullets

xxl-reloading.com
Blog
We now offer load data for bullets from Hasler, the Italien manufacturer of lead free bullets. Hasler claims to be the leader in the research of precision shooting: 
Our team of experts, lead by award-winning Giuseppe De Pasquale, has developed a superior–quality monolithic copper bullet with high attention to details. This is the best monolithic bullet you’ll find. 
Thanks to their O-ring structure, Hasler monolithic bullets have a diameter slightly inferior to the caliber needed by the barrel. The rings on the structure touch the grooves on the barrel, while the rest of the bullet doesn’t. So, while traditional bullets are in contact with the whole surface of the bore, thus producing a lot of friction, heat and counter-pressure, Hasler bullets guarantee a reduced friction and therefore higher speed. You can choose to use slightly faster burning powders so as to have better results and keep your barrels from excessive traumas. And don’t forget that thanks to this improvement the shooter will be definitely less stressed. 
Using these bullets, shots will be very fast without exceeding the pressure limits for each caliber. 

Reloading Instructions


Hasler Bullets Reloading Instructions
Hasler bullets may have two O-rings and one Pilot O-ring, or three O-rings and one Pilot O-ring. The Pilot O-ring has a different form and it is at the edge of the bullet, its function is to make the insertion of the ball into the barrel the more coaxial as possible, in order to gain the highest precision. 
During the assembling process, it is crucial that at least two o-rings are kept inside the neck (see explanatory image). The neck must be re-calibrated for at least 2/3 of its length; if you re-calibrate it for its whole lenght it is even better. The neck must offer sufficient strength to firmly retain the ogive. For ogives long as the 30/168/Ariete and 7/152 Ariete someone makes a slight crimping with “Factory Crimp Lee”, in some cases to improve the combustion, and for holding firmly the ogive gauges with short necks (300win.Mag., 7 Rem. May etc. …). 
With semi-automatic, it is desirable to do a light crimping or a narrower calibration of the neck. If you are using dies with the bushing, you have to position them so that there is still enough room for the o-rings inside the neck. 
Freeboring: this parameter is crucial for shooting precision, usually in almost every caliber you reach a freeboring between 1 and 2mm. You’ll obtain maximum precision inside this range. It is possible to modify the distance between the two O-rings, as long as they stay inside the collet. Hasler ogives offer low bore fiction and, as a consequence, lower counter-pressure. That’s why they’ll require a little more lively powders to reach the right pressure needed for the perfect combustion of the powder itself.
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