Posted by: Marshall Jackson ®
02/24/2002, 12:18:49
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My uncle gave me his old .17 Rem Model 700 #6504184. I ran his last box of hand loads through it shooting crows and beavers. Now I've started shooting factory ammo in preparation for reloading. Since I've never reloaded before, I'm taking it pretty slow. Read, buy, install, measure. Double check. My concern is: I'm going through about 100 cases, cleaning them up before decapping and resizing. As I look at the case mouth about 25 cases are lightly flattened on one side, not like they were stepped on, just not round anymore.
Also on about another 25, at the end of the case, you can see the brass is shiny, as if the case has impaced the end of the firing chamber. The flattening and case end is on the new factory ammo I've been shooting, not the last of the hand loads. Do I not worry about the cases, full length size and trim to factory spec's? or do I find a gunsmith to check this out? Thanks for your comments.
Marshall Jackson
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Posted by: RipSnorter
07/29/2002, 18:51:13
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The problem your having is actually quite simple. As you extract the empty case from the chamber it is rubbing on the inside of the chamber and flattening the neck.
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Posted by: RipSnorter
07/29/2002, 18:51:34
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The problem your having is actually quite simple. As you extract the empty case from the chamber it is rubbing on the inside of the chamber and flattening the neck.
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Posted by: Doug in CO ®
07/29/2002, 23:37:00
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I went thruogh 40 pieces of once fired factory brass yesterday. About half were slightly flattened at the mouth.
Eleven of the forty, on inspection after clean up with steel wool and neck sizing are not worth reloading. The eleven all showed the beginings of splitting in the shoulder/neck area.
One box that I fired was of recent production and I think most came from this box. On a batch of three boxes of older production cases I only had two with bad necks.
If you have a smith do anything, get him to lighten up the ejector spring.
Doug
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Posted by: jim saubier
07/30/2002, 08:26:17
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What Ripsnorter says is in fact possible but usually isn't noticable unless the cases have been neck turned to a thinner neck. The factory brass shouldn't show this upon firing. I think that there may be something in your chamber or that the cases are hitting something hard when they are ejected. But why would it happen on some cases and not others?
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Posted by: schar17rem
07/31/2002, 20:43:29
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This happens quite often with my 6mm Rem brass, but I always assumed these were from the cases that hit the ground after ejcteing the spent cartridge. I'm going to have to chekc though. The ones I pick out by hand or don't hit the ground neck down don't have this problem so what else could it be. Every gun could be different though...
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Posted by: corbin shell
02/24/2002, 16:45:10
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To all,
Did some more 1000 yard testing with my .17 rem. It was COLD and WINDY!!!! We were having a NSSC team practice and started off shooting our mags (6.5etc). Then switched to Palma rifles. I brought along the .17 and gave serious thought not to shoot it due to the high winds. Heck its just another challenge to overcome. Again most would say no way. I had loaded up some ammo to test. This test load was 21gr of N-135 with a 30gr bullet. I dialed on 41 1/4 min elevation and fired. Did not make it to the target. Came up 2 min and repeated. Did not hit paper. So I decided to shoot left of the target in the next impact area. I aimed about 8feet over the target and 8 feet left. This would give the spotter a good indication how I needed to adjust. I fire twice. Then dialed on elevation and windage. Bottom line is that this load required 47 1/2 min of elevation to be centered vertically. An increase of 6 1/4 min over the varget load. Keep in mind it was very cold today (40-45 degrees). This load crono's at 3700-3750 (the same as the varget load). It was a lot of fun trying to guess the wind. At times I had on 4 min of wind and was holding on the edge of the target frame or off several feet. Real fun. Corbin
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Posted by: dr71749
02/24/2002, 18:00:47
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Shooting my 17 rem. this weekend and noticed a smoke trail to target. Have seen this before with other 17's,generally from muzzle to 50 yds. out, on this particular setup you could see it all the way to 250 yds. After seeing it the first time had someone else shoot and I spotted,extremely plain to see all the way out. Have seen similar before but never this pronounced or over this much distance. This was through a new shilen barrel 1 in 9 twist,standard 17 rem.,with 30 gr. moly coated berger.All shots were chronographed avg.3740fps,accuracy was excellent,all bullets hit target. Out of curiosity switched to 25 gr. berger moly,velocity 4050fps, trail decreased quite a bit,but still there. Really not particularly humid or anything else unusual.Just curious if anyone might have idea or explanation. Didn't have time to try anything else,but next trip will probably try non moly bullets,to see if there is any difference. I appreciate your replies.
Don
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Posted by: russ lucas ®
02/24/2002, 22:12:44
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Don: You are seeing the moly coming off of the bullet. When you try the uncoated bullets, bet you don't see it. I see it all the time on my 14, when you drive them faster, it is more pronounced by the muzzle and dissipates quickly. russ
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Posted by: Mark D
02/24/2002, 23:50:32
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That's funny I had the same thing happen to me the other night when shooting jackrabbits , I could have sworn that I was seeing a trail of some kind coming off my bullets I just thought that I was seeing things . the more I thought about it ,the more I thought it might be the moly cote coming off in flight , then I read your post here and your seeing a trail of some kind to . It seemed like when the bullet was out at 50 yards you would see a big puff of smoke and then a trail . I guess I am not going crazy after all . Thanks! Mark
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Posted by: Benny Rhoads
02/25/2002, 10:52:16
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I haven't started using the moly coat yet on the .17's I shoot, but the only time I have seen a vapor trail is when shooting a jacketed bullet at over 4900fps. I doesn't last long though...Only about 50 yards, and nothing makes it to the 100 yard target. It's usually just a long blue trail then a big puff, and its all over...Interesting about the Moly...I'll watch for it....Benny
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Posted by: Theo
02/25/2002, 14:40:41
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I've seen that vapor trail quite often when shooting a 22-250 without any moly. Since I first saw it when shooting an SX bullet near its speed limits, I thought it was the jacket starting to come apart. But then I saw it with other bullets. I now think it is caused by water vapor rapidly condensing due to the low pressure area behind the bullet, and then going back into a gas as the pressure goes back to normal. It's like the vapor you sometimes see above and behind a fighter jet's wing. You don't always see it because the moisture and temperature conditions have to be just right for it to happen. That's my guess anyway.
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