fishpinoy27 Posted October 17, 2012 Share Posted October 17, 2012 I loaded 3.3 of N320 with Berry's 147 RN and an OAL of 1.145....the gun was a G34..OEM barrel...did chrono two different days with the same chrono... Chrony..PF is 129-130....all the tread that I read was at least 3.7 of n320 for them to make minor....I am Confused... Link to comment Share on other sites More sharing options...
gng4life Posted October 17, 2012 Share Posted October 17, 2012 On the other posts, were the bullets jacketed? Link to comment Share on other sites More sharing options...
robertbank Posted October 17, 2012 Share Posted October 17, 2012 Not surprising really. Your gun performs differently than others. That is the reason why we have to chrono our loads vs just taking data from manuals. Take Care Bob Link to comment Share on other sites More sharing options...
JetPow Posted October 17, 2012 Share Posted October 17, 2012 Berry's are plated bullets. Plated needs more powder at least +0.3 increments to make factor than jacketed or vice versa. Link to comment Share on other sites More sharing options...
carbonman556 Posted October 17, 2012 Share Posted October 17, 2012 I use the same powder and bullets the OP uses out of my 5.25. I use 3.5gn of powder and get about the same power factor. Every gun, scale and crono are a little different. As long as your gun runs good and you make PF at the big matches you are good to go... Link to comment Share on other sites More sharing options...
DonovanM Posted October 28, 2012 Share Posted October 28, 2012 Rainier plated 147's ran 138.6 out of my G34 with 3.5gr N320. Link to comment Share on other sites More sharing options...
rfwobbly Posted October 28, 2012 Share Posted October 28, 2012 The Berry is a plated bullet. The plating is not nearly as stout as the copper sheath of a FMJ. Therefore the plated bullet conforms more easily to the bore than an FMJ. Therefore less energy is required to achieve the same bullet speed. Believe the chrono, not the book. Link to comment Share on other sites More sharing options...
Brewski Posted October 31, 2012 Share Posted October 31, 2012 I made 128-130 PF using 3.2 N320 and Berry's 147s with a 1.150 OAL, mixed brass and Federal primers. This was in a stock M&P9. But note that this particular M&P ran at least 50FPS faster than all my buddies M&Ps when we were chronoing (is that an actual word?)loads. An extremely accurate load. Plated bullets run about the same as lead - faster than jacketed for a given powder charge. Link to comment Share on other sites More sharing options...
Classic_jon Posted October 31, 2012 Share Posted October 31, 2012 I load with 3.6 so that I can still make the longer shots without too much drop and I can knock down steel with no problems. I generally load my "minor" loads in all calibers to around 140PF because it just works and I never have to worry about not making PF at the chrony. It also makes my M&P pro seem to function better than "bunny fart" loads that barely make PF.... I still get teased about how soft my loads sound though so :-P Link to comment Share on other sites More sharing options...
Classic_jon Posted October 31, 2012 Share Posted October 31, 2012 (edited) Edited - Double post Edited October 31, 2012 by Classic_jon Link to comment Share on other sites More sharing options...
GoinHot Posted November 17, 2012 Share Posted November 17, 2012 Just ran a 132 PF with 3.6gr of N320. 147gr FMJ bullet, 5" 1911 and an OAL of 1.160. I like the way the heavier bullet feels at the higher PF and plan to try a slightly hotter load to see how it feels, probably around a 135 PF. The heavier bullet at slower speeds feels sluggish to me. The gun will make a diference and the recoil spring you are using will also be a factor. Good luck! Link to comment Share on other sites More sharing options...
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