slinginlead Posted April 16, 2013 Share Posted April 16, 2013 Ok, I know this is a subjective subject, but I am wondering if you can tell exactly how much motion you see in your dot. I viewed some videos here in the forum and their dod moved off the glass. I seem to see mine moving from the chest to the top of the head and back down. I went from 8.2 grns to true blue to 8.0 and it seems like it moves more. I did have a PF of 174 when I went to 8.0 it went down to 169 and had a SD of 11. I am switching to N105 as soon as Fed Ex gets here tomorrow. Also do you think I cut down my gasses and therefore caused the more movement in the gun? Thanks a lot Link to comment Share on other sites More sharing options...
wgj3 Posted April 16, 2013 Share Posted April 16, 2013 Certainly a possibility. Comps cant do their job without plenty of gas. Plenty of open shooters have super-high PF's because that is where they feel like they get the most stable dot characteristics. Link to comment Share on other sites More sharing options...
fuentesd99 Posted April 16, 2013 Share Posted April 16, 2013 +1 Link to comment Share on other sites More sharing options...
MoNsTeR Posted April 16, 2013 Share Posted April 16, 2013 Range of dot motion is a red herring. As long as it predictably comes back to where it started, how far it moves doesn't matter even one tiny little bit. Link to comment Share on other sites More sharing options...
blaster113 Posted April 16, 2013 Share Posted April 16, 2013 (edited) the dot in my lightish .38SC Open gun goes from the center to about 3/4 of the way up. also using N105. Love the powder but be prepared to stuff a lot of it into the case. 10.0 grains with a 125 grn jhp. would get me in the range of 172-175pf. at lower power factors I got a little more dot movement, so seems like the comp in my gun needed more gas to work as others have mentioned. Edited April 16, 2013 by blaster113 Link to comment Share on other sites More sharing options...
robot Posted April 17, 2013 Share Posted April 17, 2013 really, it doesn't matter where your dot goes (straight, "P", wiggle etc), as long as it comes back to the same place as fast as it can. Link to comment Share on other sites More sharing options...
Mustang684 Posted April 20, 2013 Share Posted April 20, 2013 I found increasing the pf from 170 to 178 stabilized the dot in my IMM. Link to comment Share on other sites More sharing options...
CocoBolo Posted April 20, 2013 Share Posted April 20, 2013 I have had similar results by adding more powder. With a Bedel TI comp on a 38SC it was a beast then I added another .5gr to push the pf past 175 and it tamed down. In my 9 major by accident I went from 7.7gr of Silhouette to 8.1gr w/124gr and very nice result. Now to back down .1 gr till I find the sweet spot. N105 is just hard to get and it doesn't come in 8# kegs, AA#7 shoots similar easy to find and cheap, a bit dirty but so what. The N105 a bit flatter but harder slap in the palm. Try a lighter bullet with more powder, or go to drilling holes and more powder. I have a heavy gun and a light gun, bull vs cone and the bull is flat as hell but the cone bucks a bit, the cone gun is faster inspite of that so use the timer to test your theory, don't go on feel alone, it can take you down the wrong path, like the feel of a woman. Link to comment Share on other sites More sharing options...
Supermoto Posted April 20, 2013 Share Posted April 20, 2013 Find a powder, bullet, spring weight and grip pressure that allows the dot to snap back to POA in a predicatible and trackable manner. The gun will always be waiting on you Link to comment Share on other sites More sharing options...
Jaxshooter Posted April 20, 2013 Share Posted April 20, 2013 I had the same result in my 9 mm open gun . Went from 7.8 gr Silhouette to 8.1 gr. and the gun is flatter with less dot movement. Link to comment Share on other sites More sharing options...
wes777 Posted April 21, 2013 Share Posted April 21, 2013 7.0 gn of WAC made major for me. I pushed it incrementally to 7.7. The difference in FPS between 7.5 and 7.7 was 12 fps, so I was just blowing powder out the barrel. Settled at 7.5, 179PF. As my charge went up, the dot settled down. Kaci C told me she is running 190 PF (115s and HS6) cause it tames the SNOT out of the gun/dot. Link to comment Share on other sites More sharing options...
Aircooled6racer Posted April 22, 2013 Share Posted April 22, 2013 7.0 gn of WAC made major for me. I pushed it incrementally to 7.7. The difference in FPS between 7.5 and 7.7 was 12 fps, so I was just blowing powder out the barrel. Settled at 7.5, 179PF. As my charge went up, the dot settled down. Kaci C told me she is running 190 PF (115s and HS6) cause it tames the SNOT out of the gun/dot. Hello: If she is running the power factor up that high then she needs a better designed comp. Some comps are far better than others It just takes time to find the right combination. Thanks, Eric Link to comment Share on other sites More sharing options...
wes777 Posted April 22, 2013 Share Posted April 22, 2013 7.0 gn of WAC made major for me. I pushed it incrementally to 7.7. The difference in FPS between 7.5 and 7.7 was 12 fps, so I was just blowing powder out the barrel. Settled at 7.5, 179PF. As my charge went up, the dot settled down. Kaci C told me she is running 190 PF (115s and HS6) cause it tames the SNOT out of the gun/dot. Hello: If she is running the power factor up that high then she needs a better designed comp. Some comps are far better than others It just takes time to find the right combination. Thanks, Eric Being new to open, I have not tested all of the combos out. (which I know from reading around that you have tried most of them). She is running a Limcat, dont know what his guns like. I read that you were going to do a bunch of comp testing a few years ago, any chance you could post up the link to your results? I am going to drop the Powder/PF down to about 170 and re-evaluate my relults. Akai 9 major 5.4 SVI bull, 1 hole, shoto comp Link to comment Share on other sites More sharing options...
OpenDot Posted April 22, 2013 Share Posted April 22, 2013 (edited) 7.0 gn of WAC made major for me. I pushed it incrementally to 7.7. The difference in FPS between 7.5 and 7.7 was 12 fps, so I was just blowing powder out the barrel. Settled at 7.5, 179PF. As my charge went up, the dot settled down. Kaci C told me she is running 190 PF (115s and HS6) cause it tames the SNOT out of the gun/dot. same here 9 major WAC 7.5 is the sweet spot, PF was 177 in NM and 176 in colorado 1.175 AOL WSRP PT Banshee Burkett Comp Edited April 22, 2013 by OpenDot Link to comment Share on other sites More sharing options...
818-DVC Posted April 23, 2013 Share Posted April 23, 2013 Opendot, I watching your steel shoot vids earlier and I had a question regarding your load. Are you using the same load for steel as above? Gun looks like it shoots very flat. Link to comment Share on other sites More sharing options...
slinginlead Posted April 23, 2013 Author Share Posted April 23, 2013 Open Dot, that is a sweet gun. Been eyeballing me one. Link to comment Share on other sites More sharing options...
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