The newer 42-grain Max features a Power-Point truncated nose hollow point bullet. It has a long truncated profile and wax lubrication with good accuracy. This is the mainstay of vermin shooters with a deep 40-grain hollow point, designed to expand quickly and penetrate less to deliver the energy on target. Specifically designed for semi auto rifles for reliability and consistent performance, it uses a heavier 42-grain bullet and higher velocity that sits on the sound barrier threshold and is lightly wax-coated for a reliable feeding and function. This 40-grain load has a deep hollow point bullet design for fast expansion and energy transfer and a heavy wax coating, which, combined to the slower velocity, makes it not suitable for semi-autos. The bullet is heaver, at 42 grains, for a higher energy transfer and lubed with paraffin wax to avoid build up in the mechanism and magazines. Although intended for competition shooting, as it’s a round nose, but it still has applications for reliability in sporting rifles. The Contact as a subsonic specifically to work better in semi autos for more reliability. The bullet is lubricated with a non- greasy lube to help in a smooth function in your rifle. This is a hollow point load and designed to have a shorter penetration and better bullet expansion to deliver a good stopping power compared to standard velocity. Today, manufactures make subs for semi-autos, so I thought a comparison between them and the standard fodder would be useful. If you shoot them in a semi-automatic, you can get reliability problems. 22 rimfire has been the mainstay for vermin control and today the top choice seems to be the sub-sonic (subs) version, primarily designed for use in a moderated bolt action rifle.
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