earthshine402 Posted February 14, 2015 Share Posted February 14, 2015 I'm curious if anyone has any experiences with the differences between these - I'm thinking of mostly BBI, Bayou, and Ibejiheads. I know BBI primarily offers .400 sized, Bayou defaults to .401, and Ibeji gives you the option. Does accuracy suffer at .400? more leading? more powder required for the same PF? Link to comment Share on other sites More sharing options...
nitrohuck Posted February 14, 2015 Share Posted February 14, 2015 (edited) honestly doesn't really matter, I would be very surprised if you saw a difference in leading/accuracy between either. I powdercoat my own and size to .401" because that was the only size die I could get at the time form Lee and the bullets will feed in my guns, but YMMV, some need .400" to chamber, Edited February 14, 2015 by nitrohuck Link to comment Share on other sites More sharing options...
jcc7x7 Posted February 15, 2015 Share Posted February 15, 2015 I find no difference in accuracy in either size. No barrel debris from either size and both sizes shoot same Velocity they both make 172 PF Shoot which you like better. I use Bayou's cause Donnie got me bullets when they where hard to come by a couple of years ago. I was out and everybody else just kept me on their waiting lists. When I told Donnie I was out!!! HE sent me bullets and I had them in two days So he's got my business because he actually cares about the shooters Link to comment Share on other sites More sharing options...
bmiller Posted February 16, 2015 Share Posted February 16, 2015 Donnie is a good guy. He will size to .400. I have an Sv barrel that does not chamber .401 bullets reliably, but runs .400 fine. Link to comment Share on other sites More sharing options...
darkvibe Posted February 16, 2015 Share Posted February 16, 2015 I seem to remember my BBI bullets measuring more than .400. .4015" maybe? Been a while since I measured to be sure but if you want, I can measure a BBI and Bayou 180 for you. I have both at home. Link to comment Share on other sites More sharing options...
open17 Posted February 16, 2015 Share Posted February 16, 2015 My Bayou 200 gr RN's are a touch over .401. Just enough that they won't fit a Dillon case gauge, I gauge them backwards. Doesn't seem to be a problem, they run just fine through a Tanfo Limited. When I get time I'll ream the gauge. Link to comment Share on other sites More sharing options...
earthshine402 Posted February 16, 2015 Author Share Posted February 16, 2015 I just loaded 500 MG 180 JHPs (.400) and 500 Ibejiheads 180gr FPs (.401) this weekend - everything fit my Dillon case gauge. Link to comment Share on other sites More sharing options...
joedirt Posted February 17, 2015 Share Posted February 17, 2015 Blue bullets are sized to .400 as well Link to comment Share on other sites More sharing options...
darkvibe Posted February 17, 2015 Share Posted February 17, 2015 I seem to have lost my micrometer. With a caliper where the 4th digit is a 0 or 5 I get... Bayou 180. .4005" BBI 180. .4005" The lesson here is that my memory is terrible. Hope that info is useful to someone. Link to comment Share on other sites More sharing options...
KustomHolsters Posted February 19, 2015 Share Posted February 19, 2015 The main difference i have seen, at least in my glocks with KKM barrel, is that the .401 sized bullets wont drop freely in and out of the chamber. They are still accurate but sometimes its a little though to unload and show clear. So if possible, i would get .400. Link to comment Share on other sites More sharing options...
Laughingdog Posted February 19, 2015 Share Posted February 19, 2015 My Bayou 200 gr RN's are a touch over .401. Just enough that they won't fit a Dillon case gauge, I gauge them backwards. Doesn't seem to be a problem, they run just fine through a Tanfo Limited. When I get time I'll ream the gauge. I just loaded 500 MG 180 JHPs (.400) and 500 Ibejiheads 180gr FPs (.401) this weekend - everything fit my Dillon case gauge. Passing a case gage with a loaded case is a function of the bullet profile, which is going to be affected by both diameter and OAL. One person saying .401 bullets worked fine in a Dillon gage and another saying they didn't is pretty meaningless without knowing the actual profile of the bullets being compared and the OAL you both are using. For example, I have an EGW case gage for 9mm (I only have my 9mm OAL data handy here at work for this). I can load a Berry's 9mm 124g Round Nose to 1.195" and pass case gage....well over the max OAL for 9mm. But a 9mm 124g Hollow Base Flat Point can only be loaded to 1.115" in the same case gage. Same diameter bullets. Link to comment Share on other sites More sharing options...
earthshine402 Posted February 19, 2015 Author Share Posted February 19, 2015 My Bayou 200 gr RN's are a touch over .401. Just enough that they won't fit a Dillon case gauge, I gauge them backwards. Doesn't seem to be a problem, they run just fine through a Tanfo Limited. When I get time I'll ream the gauge. I just loaded 500 MG 180 JHPs (.400) and 500 Ibejiheads 180gr FPs (.401) this weekend - everything fit my Dillon case gauge. Passing a case gage with a loaded case is a function of the bullet profile, which is going to be affected by both diameter and OAL. One person saying .401 bullets worked fine in a Dillon gage and another saying they didn't is pretty meaningless without knowing the actual profile of the bullets being compared and the OAL you both are using. For example, I have an EGW case gage for 9mm (I only have my 9mm OAL data handy here at work for this). I can load a Berry's 9mm 124g Round Nose to 1.195" and pass case gage....well over the max OAL for 9mm. But a 9mm 124g Hollow Base Flat Point can only be loaded to 1.115" in the same case gage. Same diameter bullets. In my case, I load long to 1.180", and the bullet profile does not get hung up inside the case gauge.. sticks out the other side.. plunks in freely and drops out freely.. I'm not so concerned about bullet profile rather than just making quality ammo that will fit in my barrel. If I ever encounter a bullet profile that has an issue with the standard case gauge, I guess I would just use my barrel instead. Link to comment Share on other sites More sharing options...
jstagn Posted February 20, 2015 Share Posted February 20, 2015 .401 will not feed reliably in my AET barrel. I use Blue Bullets .400/200gr. AOL 1.208 avg., .420 crimp. Gauge properly in my shockbottle (40L) and plunk and spin in my chamber. One large hole accuracy, but shoot left vs. Federal factory 180gr which shoots right. Sights set for the Blue Bullets, no dirty barrel, only blue dust on my fingers during reloading.. Link to comment Share on other sites More sharing options...
Scott Steele Posted February 20, 2015 Share Posted February 20, 2015 .401 Bayou feed/worked fine in my AET when I had it. I load long and had to push the leads forward very little,. Done by hand. Only because of long loads. Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
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