ysrracer Posted January 4, 2023 Share Posted January 4, 2023 (edited) Has anybody seen any difference in use, function, reliability, accuracy between round nose bullets vs. truncated cone bullets? I'm loading 124 9mm for both semi auto pistol and PCC. I think Blue Bullets changed from round nose to truncated cone a while ago. Thoughts? . Edited January 4, 2023 by ysrracer Link to comment Share on other sites More sharing options...
dtuns Posted January 4, 2023 Share Posted January 4, 2023 I use truncated from RMR holow points work great in my pistols and leave nice holes in paper. I don't have a lot of them through my PCC but haven't had any issues. Link to comment Share on other sites More sharing options...
Joe4d Posted January 4, 2023 Share Posted January 4, 2023 IIRC the shape was developed by the Airforce to come up with a non expanding military round that was more lethal than round nose for Berretta M-9... Not sure what the results were, or why for some reason the bullet shape took off in popularity. Was extremely common for 40 to the point I dont think there were too many RN ever made in that caliber. Supposedly the two shapes hit the feed ramp of an M9 at the same time. Link to comment Share on other sites More sharing options...
zzt Posted January 5, 2023 Share Posted January 5, 2023 Some PCC barrels with a narrow chamfer around the end of the chamber will have trouble feeding bullets with a wider meplat or a larger hollow point. I have such a gun. JHPs like the Hornady HAP or the Zero clone feed fine. Wider openings sometimes catch and the bullet sets back. I solved the problem by using JHPs for pistol Open and plated RN for PCC. I only use the PCC for SCSA and a once-a-year falling steel match. As far as RN vs. TC goes, if it feeds I prefer TC bullets. They impart energy better to pins and make plates fall just a tiny bit better. The larger the meplat, the better they do that. Link to comment Share on other sites More sharing options...
OptimiStick Posted January 5, 2023 Share Posted January 5, 2023 I tend to get more consistent seating / OAL with the flat points, and I like the nice round hole they leave in targets. RMR though I will say their heavy match winner 9mm (147gr) is one profile that doesn't fit my short throated guns well (CZ). I haven't tried the 124s, but they recommend 124s in short throated chambers. Link to comment Share on other sites More sharing options...
GOF Posted January 5, 2023 Share Posted January 5, 2023 Truncated bullets often require a slightly shorter OAL because the full bullet diameter is closer to the chamber than with a RN. The same OAL used with RN can cause the truncated bullets to hit the chamber with full diameter too far forward. Beyond that, they work great. I use coated lead from various makers in TC in PCC and handguns and have to issues at all. Link to comment Share on other sites More sharing options...
OptimiStick Posted January 5, 2023 Share Posted January 5, 2023 Mostly yeah. It depends on the shape of the TC. Blues has been fine, Precision - after they redid their profile, is fine. RMRs (147s) not so much. For round nose, the pointier ones are fine, but some of the more blunt/abrupt round nose are still a challenge. I think the Blues 150 RNs were one of the tougher ones to fit short chamber. I had my barrels reamed on my shorter chambers so I could just load one OAL for everything, except for a new Shadow2 so I'm having to go through and figure out max OALs & shapes again. Somehow over the years I ended up with a bunch of stuff i don't usually shoot that I've been trying to load up and get rid of. Link to comment Share on other sites More sharing options...
bowenbuilt Posted January 5, 2023 Share Posted January 5, 2023 The RMR Match Winner 124 grain TC is THE most accurate bullet in all of my guns period. Link to comment Share on other sites More sharing options...
ysrracer Posted January 6, 2023 Author Share Posted January 6, 2023 3 hours ago, bowenbuilt said: The RMR Match Winner 124 grain TC is THE most accurate bullet in all of my guns period. I hope mine too, I just bought a bunch Link to comment Share on other sites More sharing options...
Johnny_Chimpo Posted January 6, 2023 Share Posted January 6, 2023 6 hours ago, GOF said: Truncated bullets often require a slightly shorter OAL because the full bullet diameter is closer to the chamber than with a RN. I need to measure but I'm pretty sure it's the opposite, at least with many of the very blunt nosed RN cast bullets. Link to comment Share on other sites More sharing options...
Farmer Posted January 6, 2023 Share Posted January 6, 2023 When I compare the OAL between the RMR 135 FN and the 135 RN I seat the RN @ 1.110 and the FN is 1.085” OAL. But a Precision 125 FN is 1.13 and the RN is 1.075. My gun likes the RMR FN better than the RN too. For some reason they are just easier to get to group well. Link to comment Share on other sites More sharing options...
ohsevenflhx Posted January 6, 2023 Share Posted January 6, 2023 10 hours ago, bowenbuilt said: The RMR Match Winner 124 grain TC is THE most accurate bullet in all of my guns period. I agree. They are the most accurate bullet I have loaded. Link to comment Share on other sites More sharing options...
dtuns Posted January 8, 2023 Share Posted January 8, 2023 I put 200 plus rounds through my GMR-15 this weekend with zero issues 100 of them were in a match. I load mine 1.075OAL Link to comment Share on other sites More sharing options...
ysrracer Posted January 11, 2023 Author Share Posted January 11, 2023 On 1/8/2023 at 3:55 PM, dtuns said: I put 200 plus rounds through my GMR-15 this weekend with zero issues 100 of them were in a match. I load mine 1.075OAL I loaded up some 124 match winner (TC) . My OAL is 1.090 before they would plunk. That's close enough, right? Link to comment Share on other sites More sharing options...
dtuns Posted January 11, 2023 Share Posted January 11, 2023 (edited) 22 hours ago, ysrracer said: I loaded up some 124 match winner (TC) . My OAL is 1.090 before they would plunk. That's close enough, right? That's where mine was so I went .015 more so if seating varies I'm still under. My die holds 1.075 +-.005 Edited January 11, 2023 by dtuns Link to comment Share on other sites More sharing options...
Farmer Posted January 12, 2023 Share Posted January 12, 2023 7 hours ago, dtuns said: That's where mine was so I went .015 more so if seating varies I'm still under. My die holds 1.075 +-.005 That’s interesting, 1.095 is where I seat the 124 MW which is -.015 off the lands in my gun. Link to comment Share on other sites More sharing options...
grsdoug Posted January 12, 2023 Share Posted January 12, 2023 I load them for several PCCs (MPX, MBX, Stern, Nordic, Scorpion) and pistols. Using 3.8 grs N320 or Titegroup. 1.10 OAL. Very accurate and they cut nice round holes. Link to comment Share on other sites More sharing options...
dtuns Posted January 14, 2023 Share Posted January 14, 2023 On 1/11/2023 at 10:08 PM, Farmer said: That’s interesting, 1.095 is where I seat the 124 MW which is -.015 off the lands in my gun. Not my PCC one of my pistols. Link to comment Share on other sites More sharing options...
Farmer Posted January 14, 2023 Share Posted January 14, 2023 1 hour ago, dtuns said: Not my PCC one of my pistols. That is in my pistol. Link to comment Share on other sites More sharing options...
darthdively Posted January 14, 2023 Share Posted January 14, 2023 I was thinking about getting some Match Winners for my Shadow 2 any of you tried the 124 Match Winners an S2? I see they have a 135 gr option too. Link to comment Share on other sites More sharing options...
ysrracer Posted January 14, 2023 Author Share Posted January 14, 2023 I only shot 10 rounds in my PCC. They fed fine, but obviously WAY more testing is needed. I will say they make nice clean holes in the targets. Link to comment Share on other sites More sharing options...
dtuns Posted January 14, 2023 Share Posted January 14, 2023 5 hours ago, ysrracer said: I only shot 10 rounds in my PCC. They fed fine, but obviously WAY more testing is needed. I will say they make nice clean holes in the targets. They do make some clean holes. Link to comment Share on other sites More sharing options...
85win Posted January 15, 2023 Share Posted January 15, 2023 Have any of you guys tried the 135 grain version? What are your thoughts on that bullet? Link to comment Share on other sites More sharing options...
Farmer Posted January 15, 2023 Share Posted January 15, 2023 (edited) 6 hours ago, 85win said: Have any of you guys tried the 135 grain version? What are your thoughts on that bullet? I have tried the 135 FN match winners and the regular RN. Hands down the FN. For some reason I can’t get the RN to shoot in my pistol worth a darn but the FNMW are fine. On the RN, the ogive is a little fatter than a Berry’s and I have to seat them deeper by .045 but the Berry’s shoot great. On the 135 FN been loading 3-3.1g E3 for 130pf @ 1.085 or 4g IMR7625 for the same. Very soft shooting on both. Edited January 15, 2023 by Farmer Sp Link to comment Share on other sites More sharing options...
WDG710 Posted January 17, 2023 Share Posted January 17, 2023 Using both - but have not noticed any real difference expect hole left in the paper - improvement in accuracy was not noticed nor was a decrease. Link to comment Share on other sites More sharing options...
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