Sedalia Dave Posted June 22, 2022 Share Posted June 22, 2022 Anyone ever hear of modifying a cast bullet mold cavity to put an "Index" mark on the bullet? Idea being that the bullet would be seated into the brass case with a corresponding index mark so that all the bullets would have the same orientation. In all the reading I have done that was published by recognized BPCR experts I have never encountered such. Here is the actual verbiage from an online article I read. <quote> High end meticulous bullet casters who make large lead bullets for long range black powder actually put a divet in the bullet mold near the point, so that there is a visible index mark on the bullet that can be lined up in the case and with the bore to reduce inconsistencies shot to shot. <end quote> Personally I think the author is so full of crap that it displaced any gray matter he may have had between his ears. Link to comment Share on other sites More sharing options...
Michigan Slim Posted June 22, 2022 Share Posted June 22, 2022 First I've ever heard of that. I'll just go with no. Link to comment Share on other sites More sharing options...
Cholla Posted June 22, 2022 Share Posted June 22, 2022 I have a .308 caliber two cavity mold that the previous owner took a center punch to one of the cavities. The experts on Cast Boolites said some target shooters did that to identify which cavity the bullet came from. I have read and seen on this board where precision shooters will mark the brass cases with a punch to make sure they always orient the case in the chamber the same each time. So, what you are saying would fall right in line with that thinking. Link to comment Share on other sites More sharing options...
Muleshoe Bill SASS #67022 Posted June 22, 2022 Share Posted June 22, 2022 a divot in the mold would give the bullet a bump that would disrupt the air flow. Minuscule amount, but there. What most long range shooter do is make a mark on the brass that orients the brass the same way every time. Link to comment Share on other sites More sharing options...
Cold Lake Kid, SASS # 51474 Posted June 22, 2022 Share Posted June 22, 2022 I've never been that good that it would matter. Link to comment Share on other sites More sharing options...
ShadowCatcher Posted June 22, 2022 Share Posted June 22, 2022 https://precisionrifleblog.com/2013/10/18/secrets-of-the-houston-warehouse-lessons-in-extreme-rifle-accuracy/#:~:text=Secrets of the Houston Warehouse – Lessons In,shimmered%2C the sun never set and the Link to comment Share on other sites More sharing options...
The Original Lumpy Gritz Posted June 23, 2022 Share Posted June 23, 2022 Pure BS Link to comment Share on other sites More sharing options...
Texas Joker Posted June 23, 2022 Share Posted June 23, 2022 Or great psyop. Competitor seeking an edge bumps his bullet and loses fractions of accuracy. Hmmmm. Link to comment Share on other sites More sharing options...
PowderRiverCowboy Posted June 23, 2022 Share Posted June 23, 2022 With a confirmed shot at 1420 meters dont worry about it why would you throw off the bullets flying trajectory on purpose . Now polish them smooth maybe Link to comment Share on other sites More sharing options...
El diablo gringo Posted June 23, 2022 Share Posted June 23, 2022 Probably one of the silliest things I’ve heard. When I cast any visual imperfections go back into the pot. Any weight deviations go back in the pot. Gringo Link to comment Share on other sites More sharing options...
Bailey Creek,5759 Posted June 24, 2022 Share Posted June 24, 2022 That came from the Black Powder Book from Steve Garbe, and Mike Venturino. They recomend that after you cut the spue off the Mold. Put a Little mark on the base of the Bullet.With a straightened paper clip. Then mark the cases. When you seat the Bullet it will go into the Cases the same way. With the cases marked, they go into the chamber the say way everytime. That way if there is any imporfactions it will be going down range the same way everytime. Link to comment Share on other sites More sharing options...
Jabez Cowboy,SASS # 50129 Posted June 24, 2022 Share Posted June 24, 2022 I shoot out to 1,500 yards and I'm not going to do that ... I do sort bullets by weight though, and look for visible defects. Jabez Cowboy Link to comment Share on other sites More sharing options...
Kid Rich Posted June 24, 2022 Share Posted June 24, 2022 The base of the bullet is important for accuracy, the nose not so much. kR Link to comment Share on other sites More sharing options...
Cheatin Charlie Posted June 24, 2022 Share Posted June 24, 2022 Shooters have been marking their cast bullets and cases and indexing them in the rifles for over 100 years. If you have ever read "The Bullets Flight" by Dr. Mann written by Dr. Mann you would understand the importance of this. https://duienforcers.wildapricot.org/Resources/Documents/BulletsFlightPowderTarget_Mann_MunnCo_1909.pdf He was friends with none other than Harry Pope and they worked together on the problem of rifle accuracy. Schutzen shooters used this technique and still do to this day. With all shooting it is all about consistancy shot to shot. Man and Machine Link to comment Share on other sites More sharing options...
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