Woodsk Posted August 2, 2015 Share Posted August 2, 2015 easy question what is the longest you have loaded and functions in a .40 pro Link to comment Share on other sites More sharing options...
wgj3 Posted August 2, 2015 Share Posted August 2, 2015 Gonna be around 1.16-1.17. Limited by mag. Link to comment Share on other sites More sharing options...
ttolliver Posted August 2, 2015 Share Posted August 2, 2015 I've developed loads 1.150 and 1.160 for my M&P 40 Pro CORE and shot them all last season. First the longer one with N320 and when that ran out I finished the season with the shorter and CFE Pistol. Never any issues feeding at those lengths with the SNS 200gr round nose profile. After feeding experiments with some dummy rounds I picked 1.160 as the longest I cared to go and still feel like there was enough wiggle room in the magazine. Maybe could have gone longer. All I can really say is that 1.160 never disappointed me and it leaves darned little space between the round and the walls of the mag. Good luck! Link to comment Share on other sites More sharing options...
ParaLarry Posted August 2, 2015 Share Posted August 2, 2015 Loading for .40 minor I settled on 1.150 for 180 gr RNFP and 1.145 for 155 gr SWC. (Bear Creek bullets) Best combination of feeding, chrono consistency and accuracy. If I was pushing for major PF I would go as long as possible. Sent from my reloading bench using Tapatalk Link to comment Share on other sites More sharing options...
Hi-Power Jack Posted August 2, 2015 Share Posted August 2, 2015 Easy question, what is the longest you have loaded a .40 Pro? Not so easy. Depends on the bullet. You might find a bullet that can be loaded to 1.18", and another that can be loaded to only 1.13" (depends on shape of the bullet). So, not all 180's are the same, e.g. And, of course, it all comes down to YOUR .40 Pro. That's why somebody much smarter than I am, invented The Plunk Test. Link to comment Share on other sites More sharing options...
wolffy1876 Posted August 2, 2015 Share Posted August 2, 2015 Loading 190gr Lucky 13 Zombie coated bullets, I can go to 1.17 before they bind up in the mag. Link to comment Share on other sites More sharing options...
Woodsk Posted August 2, 2015 Author Share Posted August 2, 2015 thanks for the info! Link to comment Share on other sites More sharing options...
Flash74 Posted August 2, 2015 Share Posted August 2, 2015 1.160" is the longest I can load and have it reliable out of my magazines. I tried 1.170" and it worked most of the time but there were some hang ups. The factory chamber can accept much longer, but you are limited by the magazines. Link to comment Share on other sites More sharing options...
crobber Posted August 4, 2015 Share Posted August 4, 2015 Are you guys using these in standard mags, or are you running extensions on them? Just curious if the extension has any affect on the OAL of the rounds you are using Link to comment Share on other sites More sharing options...
Woodsk Posted August 5, 2015 Author Share Posted August 5, 2015 last night i tested some 1.155 with TTI base pads, ran just fine Link to comment Share on other sites More sharing options...
wolffy1876 Posted August 5, 2015 Share Posted August 5, 2015 Are you guys using these in standard mags, or are you running extensions on them? Just curious if the extension has any affect on the OAL of the rounds you are using Running TTI extensions Link to comment Share on other sites More sharing options...
SterlingSomeone Posted August 6, 2015 Share Posted August 6, 2015 I run Taylor freelance and TTI extensions. No problem with the longer COAL. Link to comment Share on other sites More sharing options...
Tmcfarland Posted August 6, 2015 Share Posted August 6, 2015 Great information, just picked up the 40 pro and will use it in uspsa limited. Link to comment Share on other sites More sharing options...
Hallz Posted August 12, 2015 Share Posted August 12, 2015 Plated truncated dome projectiles I have to stay under 1.135 to run my extended base pads reliably. I have found 1.128 to be the sweet spot for me. This allows a +\- variance without issues. Set at 1.135 if they drifted to 1.138+ I had FTF & DF's. My 200 & 180 loads are not showing pressure signs in major or minor. Trial and error to find what works for your set up, good luck. Link to comment Share on other sites More sharing options...
Tmcfarland Posted August 12, 2015 Share Posted August 12, 2015 (edited) Just made up a few dummy rounds and settled on 1.180. There is still about .050 clearance from bullet to the magazine. Dies and conversion kit won't be here till Saturday so won't know for sure but these all fed fine and cycled through the magazine with no issues. Using bayou bullet 200gr RN. Thanks Edited August 12, 2015 by Tmcfarland Link to comment Share on other sites More sharing options...
Flat4boxer Posted August 18, 2015 Share Posted August 18, 2015 Forgive me here but what is the advantage to loading to longer COAL length of 1.170 vs. 1.125? Link to comment Share on other sites More sharing options...
Flash74 Posted August 18, 2015 Share Posted August 18, 2015 Loading long is typically done in the 2011 type pistols to improve feeding. Another benefit is lower pressure when reloading. Also getting the bullet closer to the land and grooves to decrease the jump proves to be more accurate in a lot of firearms. Loading long is not necessary in a M&P especially if you have a stock barrel. The chambers are huge and in my experience feed everything. I found out I could load to 1.21 for my 40 and loaded up a 100 rounds. Then I tried to put them in the magazine. I got a few in before loading got real hard and I realized the rounds were too long for the magazine. I tested length for the magazine and figured out 1.16 fits and feeds so that is what I have used since. I just got a Para Pro Custom 16.40 and all my ammo loaded at 1.16 is too long. Time to work up another load. Link to comment Share on other sites More sharing options...
Tmcfarland Posted August 20, 2015 Share Posted August 20, 2015 1.180 fed and functioned perfectly. Loaded up 40 at different charges, all shot good and felt a lot better than factory loads. Going to make some at 1.175 in case I get a stray long one in there Thanks Link to comment Share on other sites More sharing options...
Kurusty Posted August 21, 2015 Share Posted August 21, 2015 I can't run anything longer than 1,150 with SNS or BBI 180 grain bullets in mine with TTI extensions, they bind up after approximately 12 rounds. Link to comment Share on other sites More sharing options...
lcs Posted August 21, 2015 Share Posted August 21, 2015 Easy question, what is the longest you have loaded a .40 Pro? Not so easy. Depends on the bullet. You might find a bullet that can be loaded to 1.18", and another that can be loaded to only 1.13" (depends on shape of the bullet). So, not all 180's are the same, e.g. And, of course, it all comes down to YOUR .40 Pro. That's why somebody much smarter than I am, invented The Plunk Test. Excellent post and correct info. Link to comment Share on other sites More sharing options...
mjmagee67 Posted September 3, 2015 Share Posted September 3, 2015 FWIW the 40 and 9 mags are the same size front to back and side to side, just different feed lips. So 9mm you can load to 1.169 max, it would stand to reason you could load 40 to at least 1.169. The M&P mags are pretty square. Link to comment Share on other sites More sharing options...
Tmcfarland Posted September 30, 2015 Share Posted September 30, 2015 I loaded and ran about 200 at 1.180" without any issues. I did however shorten to 1.175" because I did have a couple that the coating got scraped off while loading because they weren't pushed all the way to the back. I figured it might cause a magazine failure if they were moved up like that while feeding. Link to comment Share on other sites More sharing options...
awfaxis Posted September 30, 2015 Share Posted September 30, 2015 I use Xtreme 180 Heavy Plate Flat points, and I can only go 1.160. So I'm loading 1.155 and using this in both my DVC and M&P. DVC works fine with this length too. Link to comment Share on other sites More sharing options...
crazygiant Posted October 12, 2015 Share Posted October 12, 2015 1.150 is the longest I go with the tti base pads and 180 gr black and blue coated bullets. Did the push test and came up with 1.856 but am limited by the mag. Link to comment Share on other sites More sharing options...
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