Here are your results: You can see there were a lot of guys running Medium Palma and Heavy Palma contours. Proof Research Barrels; Rifle Barrel Contours. These barrels deliver tight groups and consistent performance all day, so long as you don’t abuse them. The Factory Barrels may vary as much as .015″ on dimensions. As it heats, steel expands minutely, and groups on target can expand measurably. Manufactured in Bergara, Spain, and being used by numerous top-tier gun manufacturers in both Europe and the United States, we have combined the most technically advanced barrel manufacturing techniques, state-of-the-art machinery and an unwavering commitment to … No. From the lightest to the heaviest contours, Pac-Nor can duplicate, design or modify contours to suit your needs, for a $35.00 charge. As most factory contours vary slightly, for a more precise barrel-to-stock fit, it is recommended to remove and send your barrel to be measured and machined from its contour. Smaller contour barrels can be extremely accurate and consistant. In this category, you are no longer concerned with weight. Dimension "C" is the barrel diameter at dimension "F". In my opinion, chambering size and velocity range has to go into consideration. At what contour have you guys observed that barrels become significantly more consistent than the #2 and 3 contours? That also means you pay for it. The information below will give you an idea of the size and weight of every Shilen barrel contour. Contours are held to within .005″. Please Note: Any changes to the dimensions on the Rem 700 Sporter Contours are Non-Returnable. Contours, Dimensions & Weights *Mobile Users MUST switch to desktop version to properly view this page. I have also used a #4 Brux that was somewhat more consistent than my #2 and 3 contours and I have used two #5 contours that were significantly better than any of the lighter tubes, including the #4. Dimensions and weights are approximate, based on .30 caliber bore at full length. These are our standards. If you’re a little more budget conscious, check out the Rainier Arms Mountain Series mid-weight contours. The heavier the bullet your using, the longer the bullet, the higher the velocity its driven to, the more stress the barrel has to endure consistantly to get the bullets to hit point of aim. AR-15 Barrel Profiles: Explained. * You must cut 1" off each end of the barrel. Bergara has quickly become one of the most respected barrel makers in the world. Also, the stocks barrel channel inlet can vary as well. Weight; 1: 22" 1.200".700".560" 1.25" 3" 2.2 lb: 2: 24" 1.200".750".600" 1.25" 2.625" Shooting a rifle generates a great deal of heat, and the barrel absorbs a lot of it. Of course you can do it if you want but that would eliminate the whole meaning of giving contour to a barrel. Finished Length A B C D E Approx. 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