sandrooney Posted November 1, 2013 Share Posted November 1, 2013 Does anyone run a PF that high ? My Brazos 38 super sure works good at that PF. Is there that much difference in wear and tear on the pistol between a 175 and a 180 ? Thanks, SR Link to comment Share on other sites More sharing options...
Rick88 Posted November 1, 2013 Share Posted November 1, 2013 I run 177pf it takes that much to make the comp work right. I dont think there is anymore harm there then there is at 170 or so. The pf for major was 180 back in the day. Link to comment Share on other sites More sharing options...
Sarge Posted November 1, 2013 Share Posted November 1, 2013 I'm at 179 in 9MAJOR. The comp just doesn't work as well otherwise. Link to comment Share on other sites More sharing options...
Mat Price Posted November 1, 2013 Share Posted November 1, 2013 I run 177 in my 9 major gun Link to comment Share on other sites More sharing options...
Aircooled6racer Posted November 1, 2013 Share Posted November 1, 2013 Hello: If the comp is designed correctly 171-173 PF works well. Why beat yourself up and the pistol as well. You may want to try some different powders and bullet weights. Thanks, Eric Link to comment Share on other sites More sharing options...
Mat Price Posted November 1, 2013 Share Posted November 1, 2013 True Eric I run 173 my super and it it's perfect. My trubore just doesn't start getting good till 175 Sent from my SAMSUNG-SGH-I317 using Tapatalk Link to comment Share on other sites More sharing options...
Mat Price Posted November 1, 2013 Share Posted November 1, 2013 9major trubore that is Sent from my SAMSUNG-SGH-I317 using Tapatalk Link to comment Share on other sites More sharing options...
Hammar Posted November 2, 2013 Share Posted November 2, 2013 I've gone up from172 to 178. Flattened out the gun better at the higher PF. Wear and tear probably more determined by type of powder and weight of springs than just PF. Link to comment Share on other sites More sharing options...
Mturnbull333 Posted November 2, 2013 Share Posted November 2, 2013 I run 177 and my daughter runs 179, both guns are all over the place at 171-175. Link to comment Share on other sites More sharing options...
Whoops! Posted November 2, 2013 Share Posted November 2, 2013 You guys could do the same with a slower powder at a lower power factor and less wear on the gun. Although, that's why I don't like 9 major, powder inflexibility. Link to comment Share on other sites More sharing options...
a matt Posted November 2, 2013 Share Posted November 2, 2013 (edited) Quick question, do u guys run shock buff at the hi PF? I am open clueless. Lol sorry for the drift. Edited November 2, 2013 by a matt Link to comment Share on other sites More sharing options...
sandrooney Posted November 2, 2013 Author Share Posted November 2, 2013 I am using N105. Link to comment Share on other sites More sharing options...
Sarge Posted November 2, 2013 Share Posted November 2, 2013 Quick question, do u guys run shock buff at the hi PF? I am open clueless. Lol sorry for the drift. I don't Link to comment Share on other sites More sharing options...
latech15 Posted November 2, 2013 Share Posted November 2, 2013 I run 177 in my 9 major gun Says the guy with two cracked slides! Sorry buddy, I couldn't resist. Link to comment Share on other sites More sharing options...
Mat Price Posted November 2, 2013 Share Posted November 2, 2013 (edited) Lol.but I only run 173 in my super and it cracked too. Edited November 2, 2013 by Mat Price Link to comment Share on other sites More sharing options...
kneelingatlas Posted November 2, 2013 Share Posted November 2, 2013 (edited) PF alone is not a good indicator of wear and tear since the same load with the same pressure will yield two different PFs. For instance the highest PF I've reached in my Gold Team V12 (5.25" barrel, 12 holes) is 164 which took 8.3gr of HS6 under a 124gr. I didn't even want to try that load in my CZ (5.1" barrel, no holes) since 7.7gr makes 178PF! These findings make it clear to me why people say the Gold Team has a "soft slide" or "weak lugs"; the reality is that if they're running over 165PF in their GT it's the equivalent of running over 190PF in my CZ; I wouldn't expect and 9mm barrel/slide to last long with a steady diet of loads that hot. Edited November 2, 2013 by kneelingatlas Link to comment Share on other sites More sharing options...
EkuJustice Posted November 2, 2013 Share Posted November 2, 2013 I have found on the trubor I have to crank the pf up it like 177-178 to really get the comp working well with124 grain bullets. With 115 I can get it flat in the 172-173 range Link to comment Share on other sites More sharing options...
sandrooney Posted November 2, 2013 Author Share Posted November 2, 2013 Thanks a lot of good info. Link to comment Share on other sites More sharing options...
pharoh Posted November 2, 2013 Share Posted November 2, 2013 I run my trubor at 173-174pf with hs6 (8.0gr) with 124gr fmj's and it feels great Link to comment Share on other sites More sharing options...
Rick88 Posted November 3, 2013 Share Posted November 3, 2013 I have found on the trubor I have to crank the pf up it like 177-178 to really get the comp working well with124 grain bullets. With 115 I can get it flat in the 172-173 range What powder weight change did you make when switching to the 115? Link to comment Share on other sites More sharing options...
CocoBolo Posted November 3, 2013 Share Posted November 3, 2013 Those truebores are hole deffficent, drill a couple #3 holes in it and crank it up to 175 pf and they work pretty good. My 9 major has crooned at 189 pf, hasn't cranked anything yet.. Mostly I run around 175 pf it just shoots better at that level, 7.7gr of Silhouette if I drop the load to 7.4 I make major but it is bouncey, I guess I need to drill it! Link to comment Share on other sites More sharing options...
EkuJustice Posted November 3, 2013 Share Posted November 3, 2013 Went from 8.3 of hs 6 with a 124 Cmj at 1.17. To 8.9 of hs6 with a 115 jhp at 1.16. I have 2 popple holes in the barrel also Link to comment Share on other sites More sharing options...
Mat Price Posted November 3, 2013 Share Posted November 3, 2013 I have 3 holes in mine. It really starts to settle in at 175 with 8.6 of hs6 and a124 I may go back to 115 th Sent from my SAMSUNG-SGH-I317 using Tapatalk Link to comment Share on other sites More sharing options...
Rick88 Posted November 3, 2013 Share Posted November 3, 2013 I thought about going with holes, but as of right now all my dot does is wiggle a little so I guess if it aint broke don't fix it :-) Link to comment Share on other sites More sharing options...
CocoBolo Posted November 3, 2013 Share Posted November 3, 2013 I thought about going with holes, but as of right now all my dot does is wiggle a little so I guess if it aint broke don't fix it :-) The dot should track up and down, this isn't a function of pf, it is more related to how well you grip the gun, more balanced that brute force, however I have found that side ways motion can also vary from one powder to the next, mine does a little sideways zig zag with AutoComp, but tracks straight up and down with Silhouette or HS6. Your recoil spring has a lot to do with how well you shoot, the most popular is the 9#, I run a 10#, because the timer says I'm faster with a 10#. It takes a good while shooting open to get your eyes fast enough to track the dot and even longer for you brain to comprehend it. Personally I hate the holes, but from shooting the same gun with and without the holes, I'm DTD down to drill, it takes a lot of the flip off at the beginning of recoil, David Rea has a great post here a couple years ago about his Brazos with and without holes. The TrueBore in particular is under comped, so it needs that little bit of help IMHO, and that fat overweight slide need to be whacked down to fighting weight, then it is as good as anything out there.. Link to comment Share on other sites More sharing options...
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