nexus Posted June 10, 2014 Share Posted June 10, 2014 Im experiencing this with my gun with pf of 165 . My current load is 6.9 gr 125 heads N340 im using a teflon heads running a V6 and 3 port comp . Thanks Link to comment Share on other sites More sharing options...
Steve RA Posted June 10, 2014 Share Posted June 10, 2014 Excessive before or after the shot ?? Link to comment Share on other sites More sharing options...
nexus Posted June 10, 2014 Author Share Posted June 10, 2014 After the shot Link to comment Share on other sites More sharing options...
BritinUSA Posted June 10, 2014 Share Posted June 10, 2014 What's the dot doing, does it go straight up and down a few times or is it going in a circular motion ? What recoil spring ? Link to comment Share on other sites More sharing options...
Chris iliff Posted June 10, 2014 Share Posted June 10, 2014 You might not be making enough gas. I don't use Vhit powders but 165 pf is right at the edge of pf for major. Remember, just a few short years ago the PF was 175. I'd try a different powder or bump my current load to 172-173 pf using the Vhit powder. Ymmv. Also, how is your grip? Link to comment Share on other sites More sharing options...
nexus Posted June 10, 2014 Author Share Posted June 10, 2014 The dot is going up and bouncing down and im using an 8lbs variable recoil spring Link to comment Share on other sites More sharing options...
Neomet Posted June 10, 2014 Share Posted June 10, 2014 First thought is to be sure your support hand is locked forward. Well, actually my first thought is that as I recall 340 is a pretty darn quick powder so may not be the best choice for a comped pistol. I could be wrong on that though. In any event this is a nice vid by Jerry. I would start about 9:20 for grip. Link to comment Share on other sites More sharing options...
kneelingatlas Posted June 10, 2014 Share Posted June 10, 2014 Powder too fast, PF too low. Link to comment Share on other sites More sharing options...
calvinc78 Posted June 10, 2014 Share Posted June 10, 2014 Sounds like you need more gas to work the comp... Try dropping to 115's and add powder. Link to comment Share on other sites More sharing options...
Mthomas0001 Posted June 10, 2014 Share Posted June 10, 2014 +1 on the lighter bullets. I have used both 115's and 124's quite a bit and the 115's are about as flat as it comes.m go up to a 170-175 pf and see what happens. Link to comment Share on other sites More sharing options...
MichaelGj Posted June 10, 2014 Share Posted June 10, 2014 Change powder to N350 or 3N37 or 3N38 most common powders for Major depending of your cal. Link to comment Share on other sites More sharing options...
Guest Posted June 10, 2014 Share Posted June 10, 2014 The low hanging fruit would be to tune/verify the following to help the gun work as a system: 1. mainspring - around 17 lbs to 19 lbs seems to be the sweet spot for reliable ignition and trigger feel. 2. recoil spring - 8 to 10 pounds is pretty typical. Be sure the recoil spring isn't fully compressing and going solid before the slide travels fully to the rear (coil bind). I put a fresh recoil spring in an open gun a while back without checking for coil bind and the dot got pretty squirrely. Checked for coil bind and found that the spring was going solid about 1/16" before the slide reached the end of its travel (I use a shock-buff). Cut off 2-3 coils to eliminate the coil bind and it totally changed the dot tracking back to it's predictable sweet old self. 3. Firing pin stop radius - If you have a squared stop might want to try putting a radius on it. I've tried the square stop and thought it made the dot tracking erratic. 4. Load development - Maybe try a couple different powders before giving up on the 124 grainers. I think the powder is too fast for your gun. Try the simple stuff first. Link to comment Share on other sites More sharing options...
lcs Posted June 10, 2014 Share Posted June 10, 2014 Are you loading for IPSC or USPSA major? Your profile does not indicate where you are from. In USPSA, I always look for a 170-172 PF when I chrono a new load and then I start tuning the load for dot movement. Depending on the gun configuration, some loads just won't stablize the dot very well. Link to comment Share on other sites More sharing options...
nexus Posted June 11, 2014 Author Share Posted June 11, 2014 (edited) Are you loading for IPSC or USPSA major? Your profile does not indicate where you are from. In USPSA, I always look for a 170-172 PF when I chrono a new load and then I start tuning the load for dot movement. Depending on the gun configuration, some loads just won't stablize the dot very well. Im loading for IPSC Edited June 11, 2014 by nexus Link to comment Share on other sites More sharing options...
nexus Posted June 11, 2014 Author Share Posted June 11, 2014 Sorry for that i did not edit my profile . Im from the philippines and im new to open division we are in IPSC . After reading all your informative replies i think im going to 170-171 pf from there i will test on different loads until im satified with the dot movement were i can track it ver well . Thank you very much guys for ur very positive replies Link to comment Share on other sites More sharing options...
BSeevers Posted June 11, 2014 Share Posted June 11, 2014 160 PF in IPSC so 165 is ok although I would use a powder in the burn rate to load like 8-9 grains Its probably your expectations of what you think you should see and what you are seeing. What are your splits and transitions on three targets at 3 yds 7 yds 10 yds and 25 yds Link to comment Share on other sites More sharing options...
Neomet Posted June 11, 2014 Share Posted June 11, 2014 Open is the one division where I think minimum PF doesn't mean much as for whatever reason I have yet to shoot an Open gun that doesn't feel better and have less dot movement at 175 to 180 than at either 160 or 165. This is of course with the caveat that you are using slow burning powder. Link to comment Share on other sites More sharing options...
Shadyscott999 Posted June 11, 2014 Share Posted June 11, 2014 powder to fast and power factor too low. Need more GAS! Link to comment Share on other sites More sharing options...
SilverBolt Posted June 13, 2014 Share Posted June 13, 2014 N340 is too fast. N350 or 3N37, 3N38. Link to comment Share on other sites More sharing options...
Shadow Posted June 13, 2014 Share Posted June 13, 2014 The dot is going up and bouncing down and im using an 8lbs variable recoil spring 1. Don't take this wrong, just asking. How long have you been shooting open? This is normal, unless its excessive. If you are new to open, have an experienced open shooter shoot your gun and see what he thinks. Do a search here on dot movement. There's a couple of videos posted. Compare these to your dot movement. 2. About ten years ago, N340 powder was popular locally for awhile, but at 172-175 power factor. Everyone I know has moved on to slower powders, but it was definitely a workable load. Link to comment Share on other sites More sharing options...
nexus Posted June 14, 2014 Author Share Posted June 14, 2014 The dot is going up and bouncing down and im using an 8lbs variable recoil spring 1. Don't take this wrong, just asking. How long have you been shooting open? This is normal, unless its excessive. If you are new to open, have an experienced open shooter shoot your gun and see what he thinks. Do a search here on dot movement. There's a couple of videos posted. Compare these to your dot movement. 2. About ten years ago, N340 powder was popular locally for awhile, but at 172-175 power factor. Everyone I know has moved on to slower powders, but it was definitely Im new to open division . About 2 months and i have just shot around 1k rounds into and trying diff kind of loads. Thank you very much for the advice im still learning all about open guns Link to comment Share on other sites More sharing options...
Shadow Posted June 14, 2014 Share Posted June 14, 2014 There's a lot to learn and experiment with in open. Lots of good information here in the open gun forum. Welcome to the dark side. Link to comment Share on other sites More sharing options...
nexus Posted June 14, 2014 Author Share Posted June 14, 2014 There's a lot to learn and experiment with in open. Lots of good information here in the open gun forum. Welcome to the dark side. Thank you so much for all your kind reply and im in process of finding the right load and that miserable dot movement hehe . Happy shooting and stay safe just enjoy the game DVC Link to comment Share on other sites More sharing options...
kosh79 Posted June 14, 2014 Share Posted June 14, 2014 What pistol are you using what caliber all this good stuff is kind of need to know. From the looks of your load it looks like the powder is too fast. But the rest of the info is helpful to identify the problem Link to comment Share on other sites More sharing options...
nexus Posted June 14, 2014 Author Share Posted June 14, 2014 (edited) What pistol are you using what caliber all this good stuff is kind of need to know. From the looks of your load it looks like the powder is too fast. But the rest of the info is helpful to identify the problem OIm using an open gun and 38 super Edited June 14, 2014 by nexus Link to comment Share on other sites More sharing options...
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