In this issue: Rifle center of gravity Bloop tubes / womens free rifle "Cooking" chambered rounds Frisbee traced to trap shooting??? Korean clothing ************************************************************ I am new to this list, and do not know if I am at the end of this discussion or in the middle. First my background. I used to shoot 3 and 4 position as a junior and through college in the late 60's and 70's. Both NRA and international. I was lucky enough to be shooting in the bay area at the same time that Gary Anderson living was in the bay area, and was shooting at a range that was very much into small bore shooting (tryouts for the Pan Am and Olympic games were shot there). The CG of the rifle is actually a secondary issue. The main issue is the forces on the two contact points that support the rifle. These being the non shooting hand and the shooting shoulder. The force on the non shooting hand should have only a vertical component representing the weight of the rifle. The force on the shooting shoulder should be a horizontal component to insure proper rifle/body contact. This component shoud be in line with the bore of the rifle to minize recoil effects. Now having said all this lets look at the positions and see haow they work. First lets take the positions that use a sling. In these positions the CG of the rifle is between the non shooting hand and the butt of the rifle. The forces caused by the weight of the rifle is taken up in both places. The non shooting hand carries most of the weight, but some of the weight is carried by the butt, mainly by friction and the horizontal force into the shooting shoulder. The closer the rifles CG is to the non shooting hand the less the shoulder has to support through friction, which means that the sling can be looser. There are two other points of contact between the body and the rifle. The cheek and the shooting hand. In the above discussion it is assumed that there are no forces on there two points of contact. Now for the non-sling positions. Something needs to replace the force on the shooting shoulder that was caused by the sling in the other positions. The only thing that can create this force is the shooting hand. To reduce effects on trigger control we would like to keep this force to a minimum. This is done by keeping the CG of the rifle over the non shooting hand. At the same time there must not be any vertical component transfered to the rifle from the cheek. When shooting with a free rifle the CG of the rifle is placed forward of the non shooting hand to insure that the hook of the butt plate is well placed in the arm pit (this can also be done for kneeling). We have only looked at the CG of the rfle and its contact with the body. In kneeling and standing we also need to look at the whole system (body and rifle). A discussion for later. carl ************************************************************ Hi, This one guy at our club says that bloop tubes are going to be made illigal because of a new UIT ruling. Also there will be a ladies free rifle called the sporter rifle. It will still have the 5.5kg limit but you could have hook, palm rest, etc. LIke a 1913 stock/1907 combo type gun. DOes anyone have any info on this and how true is it. I havn't heard anything about it anywhere else. [Ed. note - I had my coach ask Bill Krilling, who is a UIT representative and who brought up this very thing at USASNC in September: Ok here you are per Bill Krilling, UIT Rifle. Bloop tubes: No action is pending for this item by the UIT. Ladies Rifle: A ladies free-like rifle of 6.5kg is approved by the UIT. It is to be called Sport Rifle for Ladies much as sport pistol is in pistol. Exact details will be forthcoming from the respective governing bodies. Good Shooting Chet Skinner, Coach] ************************************************************ CHET, I had told my shooters many times that they need to get their shots off quickly after they had chambered a round. Early this summer I got a chance to score for a couple of them at a match. Usually I am pretty busy running the match as I am the HP rifle chairman of the XXXXXX Rifle Club. I watched two individuals put a round in their chamber almost as soon as they came out of recoil. One shooter kept adjusting his elevation up and down. The other one left his sights alone so much that he wasn't even adjusting for the mirage changes. After the match I talked to both and asked questions about why they were doing what they were. The shooter doing the adjusting said that he couldn't seem to find an elevation zero. I told him that was because he was chambering the round way too soon and letting it cook. Because of the target changing or marking service, he had the time from 30 sec. to over a minute before he could get his next shoot off. I told him that this changes the point of impact due to higher pressures. Both got told not to load until just before shouldering the rifle. The shooter that wasn't making changes got some coaching (again) on reading the wind and mirage. Both had much better 600 yard scores the next time out. This was a lesson for everyone on the team, including me. In the hustle and bustle of running the matches I had forgotten to keep an eye on them to make sure that they were doing things the way that I had taught them. Club Coach. Lessons Learned: Thought we all could find somthing in the above message in that precision shooting takes great care and attention to detail. The first shooter found that he was chasing his bullet all over the target and never achieving a zero for the weapon. This happens in .22 and high power shooting all the time. It is like a dog chasing its own tail and never catching it. In one message I said that a shooter must bore sight the weapon prior to every competition and this is one of the reasons for it. The second shooter failed to consider wind, merage, and light problems during the shooting procedure and again the weapon was not zeroed for the competition. We have noted that both shooters were defeated before they started because attention to detail was defeated and therefore so was the shooters ability to correctly shoot their weapons. Chet Skinner ************************************************************ [Ed. note - normally I wouldn't say this fits our list, but I figure anything to give shooting more positive publicity is worth distributing. Please respond DIRECTLY to Mr. Malafronte.] I am conducting research into the origin and history of Frisbee playing for a new book. I have discovered that in the early days, some Clay Pigeons were designed to be thrown into the air by hand. If anyone has information (photos etc) on these clay pigeons, please inform me. I am also looking for any old photographs or illustrations of Trap Shooting that I can use in my book. I will pay $50.00 for an old photo of someone throwing a clay pigeon by hand. Of course, I would enjoy any letters from individuals who were throwing these hand held clay pigeons. Please let me know where I can find examples of these hand thrown clay pigeons. The sport of Trap Shooting could be credited with starting the international sport of Frisbee playing! I hope that you will be able to contribute to this Frisbee history. Thank You, Victor Malafronte 1406 Park St. #100 Alameda, CA 94501 510-814-9639 Email: victor@vdn.com ************************************************************* As promised, I talked with Troy Baker at the fall selection match and have the following info: Korean leather jackets $325 Korean leather pants $290 Mouche leather jacket $725 Mouche canvas jacket $575 Mouche leather pants $575 Mouche canvas pants $475 There are a few other items from each manufacturer also. If interested contact Troy at: 253 E. Aster St. Upland, CA 91786 909-985-0366 (he's not good at returning calls) ************************************************************* End of UIT Mailing List #14 Michael Ray - Systems Engineer Rose-Hulman Inst. of Tech. Rifle Coach The Olympic Shooting Page - http://www.geocities.com/Colosseum/1190/