RangerMcFadden Posted January 27, 2020 Share Posted January 27, 2020 I’m not saying you can’t make it work but my life got a whole lot easier when I got rid of Berry’s plated. I could never make chrono with em. I now use a .358 coated bullet from Ibejiheads. So not the advice you are looking for but maybe swap bullets and keep your powder? Link to comment Share on other sites More sharing options...
MikeBurgess Posted January 27, 2020 Share Posted January 27, 2020 (edited) One other thing to keep in mind when looking at book loads vs your results is EVERY GUN IS DIFFERENT my wife and I both have 627s her gun averages 50+FPS slower than mine with 165 grain bullets from the same batch of ammo. Also I have fond that chronoing a revo is like chornoing 8 different guns as each chamber will run a little different speed Edited January 27, 2020 by MikeBurgess Link to comment Share on other sites More sharing options...
Distant Thunder Posted January 27, 2020 Share Posted January 27, 2020 2 hours ago, MikeBurgess said: One other thing to keep in mind when looking at book loads vs your results is EVERY GUN IS DIFFERENT my wife and I both have 627s her gun averages 50+FPS slower than mine with 165 grain bullets from the same batch of ammo. Also I have fond that chronoing a revo is like chornoing 8 different guns as each chamber will run a little different speed Yup! Link to comment Share on other sites More sharing options...
ysrracer Posted January 29, 2020 Author Share Posted January 29, 2020 Here's what my chrono spit out: Name: 4.8 Herco Shots: 5 Average: 707 ft/s SD: 28 ft/s Min: 665 ft/s Max: 744 ft/s Spread: 79 ft/s Power Factor Average: 111 Power Factor Low: 105 Power Factor High: 117 Barometric Pressure: 30 in Hg Temperature: 52 F Weight: 158.0 gr. Link to comment Share on other sites More sharing options...
ysrracer Posted January 29, 2020 Author Share Posted January 29, 2020 Name: 5.1 Herco Shots: 8 Average: 790 ft/s SD: 21 ft/s Min: 761 ft/s Max: 824 ft/s Spread: 63 ft/s Power Factor Average: 124 Power Factor Low: 120 Power Factor High: 130 Barometric Pressure: 30 in Hg Temperature: 52 F Weight: 158.0 gr. Link to comment Share on other sites More sharing options...
ysrracer Posted January 29, 2020 Author Share Posted January 29, 2020 Name: 4.4 231 Shots: 8 Average: 710 ft/s SD: 22 ft/s Min: 688 ft/s Max: 763 ft/s Spread: 75 ft/s Power Factor Average: 112 Power Factor Low: 108 Power Factor High: 120 Barometric Pressure: 30 in Hg Temperature: 52 F Weight: 158.0 gr. Link to comment Share on other sites More sharing options...
ysrracer Posted January 29, 2020 Author Share Posted January 29, 2020 Name: 4.6 231 Crimped Shots: 7 Average: 726 ft/s SD: 17 ft/s Min: 698 ft/s Max: 758 ft/s Spread: 60 ft/s Power Factor Average: 114 Power Factor Low: 110 Power Factor High: 119 Barometric Pressure: 30 in Hg Temperature: 52 F Weight: 158.0 gr. Link to comment Share on other sites More sharing options...
ysrracer Posted January 29, 2020 Author Share Posted January 29, 2020 Name: 3.6 Titegroup Crimped Shots: 8 Average: 592 ft/s SD: 12 ft/s Min: 578 ft/s Max: 617 ft/s Spread: 39 ft/s Power Factor Average: 93 Power Factor Low: 91 Power Factor High: 97 Barometric Pressure: 30 in Hg Temperature: 53 F Weight: 158.0 gr. Link to comment Share on other sites More sharing options...
ysrracer Posted January 29, 2020 Author Share Posted January 29, 2020 From my GSG 1911 .22 pistol Name: CCI Mini Mags Shots: 5 Average: 1036 ft/s SD: 22 ft/s Min: 1008 ft/s Max: 1069 ft/s Spread: 61 ft/s Power Factor Average: 41 Power Factor Low: 40 Power Factor High: 42 Barometric Pressure: 30 in Hg Temperature: 55 F Weight: 40.0 gr. Link to comment Share on other sites More sharing options...
ysrracer Posted January 29, 2020 Author Share Posted January 29, 2020 On 1/25/2020 at 11:53 AM, alecmc said: 3.8 of clays behind a 160 grain makes 130+ PF I ordered 500 Ibejiheads Coated Bullets just to try out. I can't shoot them indoors, but if they make minor I'll shoot them in Mesquite. I hope the guys in Mesquite don't read this Link to comment Share on other sites More sharing options...
Joe4d Posted January 29, 2020 Share Posted January 29, 2020 19 hours ago, ysrracer said: Name: 3.6 Titegroup Crimped Shots: 8 Average: 592 ft/s SD: 12 ft/s Min: 578 ft/s Max: 617 ft/s Spread: 39 ft/s Power Factor Average: 93 Power Factor Low: 91 Power Factor High: 97 Barometric Pressure: 30 in Hg Temperature: 53 F Weight: 158.0 gr. That makes no sense whatsoever, when I am doing over 700 fps with 3.1 grs tightgroup with a 148 MO coated 148 wadcutter. Link to comment Share on other sites More sharing options...
ysrracer Posted January 29, 2020 Author Share Posted January 29, 2020 (edited) 18 minutes ago, Joe4d said: That makes no sense whatsoever, when I am doing over 700 fps with 3.1 grs tightgroup with a 148 MO coated 148 wadcutter. I'm using a Berry's plated 158 out of a5 inch 627. I checked the scale against another scale. Right on the money I re chrono'd them. Here's the data Name: 3.6 Titegroup Crimped #2 Shots: 7 Average: 591 ft/s SD: 5 ft/s Min: 582 ft/s Max: 599 ft/s Spread: 17 ft/s Power Factor Average: 93 Power Factor Low: 91 Power Factor High: 94 Barometric Pressure: 30 in Hg Temperature: 53 F Weight: 158.0 gr. Edited January 29, 2020 by ysrracer Link to comment Share on other sites More sharing options...
Joe4d Posted January 29, 2020 Share Posted January 29, 2020 (edited) Dunno,,, Buy some .358 lead 158's of some kind... see what happens. All I can say is eliminate 1 thing at a time to find the problem. Have you miked your bullets ? miked your chamber throats ? miked your forcing cone, slug barrel measure lands and grooves? Beg borrow steel some one elses jug of TG to load a few rounds.... Something ISNOT right,,, FYI my gun is a 5 inch pro series 686,, should be near identical barrel Edited January 29, 2020 by Joe4d Link to comment Share on other sites More sharing options...
Joe4d Posted January 29, 2020 Share Posted January 29, 2020 (edited) On 1/25/2020 at 9:53 PM, PatJones said: I've been told tightgroup makes the forcing cone a little warmer than other powders. Burns suck if you reload strong hand, I usually forget to tape my middle finger until stage 2. Sent from my Pixel 2 using Tapatalk On 1/25/2020 at 9:55 PM, PatJones said: Isn't 105 power factor for speedloader fed revos in IDPA? Sent from my Pixel 2 using Tapatalk I dont shoot either game, my point was if "X" load makes 710 with a 148 WC,,, which is loaded to same depth as a 158 SWC It should make at least the same or even higher velocity. I do reload strong hand,, but umm I must really suck cause I never noticed burns. Only game I play is pins and if you are reloading you dun lost. Edited January 29, 2020 by Joe4d Link to comment Share on other sites More sharing options...
ysrracer Posted January 29, 2020 Author Share Posted January 29, 2020 Wouldn't a heavier bullet be going slower with the same powder charge? Link to comment Share on other sites More sharing options...
Joe4d Posted January 30, 2020 Share Posted January 30, 2020 (edited) Well normally, but a 148 WC,, is specifically the same bullet without the little pointy section... So same case capacity.BUT an bit more resistance so a bit more pressure. Id be surprised if , everything equal and using shoulder to judge OAL,,, a 158 SWC, didnt come in either the same or higher than a 148 in this case. I have both bullets on hand from same MFG,,, next time I set up for 38 will load some and find out and post on this thread just for those with inquiring minds like me that want to know, or at least have one set of data to compare. Edited January 30, 2020 by Joe4d Link to comment Share on other sites More sharing options...
mchapman Posted January 30, 2020 Share Posted January 30, 2020 25 minutes ago, Joe4d said: Well normally, but a 148 WC,, is specifically the same bullet without the little pointy section... So same case capacity.BUT an bit more resistance so a bit more pressure. Id be surprised if , everything equal and using shoulder to judge OAL,,, a 158 SWC, didnt come in either the same or higher than a 148 in this case. I must have missed something but I thought he was using a 158 gr. Berrys plated round nose, but I 've been wrong before. Link to comment Share on other sites More sharing options...
mchapman Posted January 30, 2020 Share Posted January 30, 2020 (edited) 2 hours ago, ysrracer said: Wouldn't a heavier bullet be going slower with the same powder charge? With the same powder charge, the heavier bullet will be faster with more energy, dropping to a lighter bullet there is less resistance and less pressure and usually a slower speed. In another thread about steel loads, MWP said if you do your homework you can use two different bullets with the same charge and have loads with the lighter bullet for steel challenge and the heavier one that makes power factor for uspsa, and icore. Now there may not be much difference in the speed and sometimes they may be slower or close to the same. For example with 3.8 gr and a 158 gr bullet = 825 ft per second then with the same charge of 3.8 gr and a 115 gr. bullet =826 ft per second, so heavy is 130 PF and 115 is 95 PF. I want to add that this is with coated bullets, they seem to run faster than plated. Edited January 30, 2020 by mchapman Link to comment Share on other sites More sharing options...
Joe4d Posted January 30, 2020 Share Posted January 30, 2020 8 hours ago, mchapman said: I must have missed something but I thought he was using a 158 gr. Berrys plated round nose, but I 've been wrong before. IIRC was a Berry plated SWC,, so yeh a bit slower than coated, and yeh heavier so maybe a bit difference. I would think the pressure be higher with same charge so ud get to max charge sooner. But As mentioned I am at MINIMUM,,, and like a 120 fps difference. I mean with basically same design gun, If I can make 700 with a 3.1 gr minimum charge of TG under a 148 WC,,, I would think that velocity should be over 700 with his 3.6 gr under a 158 He's at 590 at near max charge. Something is off definitely. Simplest thing would be to try a regular cast or poly coated bullet see if you get closer to book velocities or Mike the Berry's Link to comment Share on other sites More sharing options...
mchapman Posted February 7, 2020 Share Posted February 7, 2020 On 1/29/2020 at 11:37 AM, ysrracer said: I ordered 500 Ibejiheads Coated Bullets just to try out. I can't shoot them indoors, but if they make minor I'll shoot them in Mesquite. I hope the guys in Mesquite don't read this You may just want to load and bring some loads that might be a bit more "juicy"" so you can attempt that EVIL spinner at Mesquite for a chance at some bonus points!1 LOL Link to comment Share on other sites More sharing options...
Vincerama Posted February 13, 2020 Share Posted February 13, 2020 OK, so I loaded up some .38 Long Colt, which I know you can't quite compare apples to apples with .38 special, but for general reference. with 160 gn rn, no groove, S&S Casting hiTek coated .358 bullets, show from a 4 inch 686+ measured at the muzze with a magnetospeed chrony; OAL I believe was 1.44 ish. Sorry for this non-number, my dial caliper broke. The bullet nose sticks out as much as it did with my .38 special load, but of course the shorter case means the OAL is shorter. 3.6 grains (actually more like 3.55) of Ramshot Competition averaged 891 fps = 134 pf 3.6 grains Clays averaged 846 fps = 135 pf 3.8 grains Clays averaged 888 fps = 142 pf 4.0 grains Clays averaged 919 fps = 147 pf I didn't see pressure signs like flattened primers, and the cases all slid out. I then loaded any remaining rounds into moonclips and shot them through my 627 (The magnetospeed won't strap onto the 627 due to the angled half lug, but straps onto the 686's full underlug. I had considered using a 4.75 inch barelled Vaquero, just so I could load and unload it without unstrapping the chrony, but .. didn't) All the moonclips slid out easily. What I noticed with the clays was that after firing, sometimes this little curl of black smoke would waft out from around the forcing cone area after firing the round. In anycase, I think 3.6 grains of RC or Clays works well. And probably more accurate than I can shoot. I think I will drop the RC charge to 3.5 and use that for the next USPSA match I can get to. I'll chrony that. I had previous done some measurements with .38 special cases and found that 3.55 grains of RC gave about 132 pf or so, versys 134 pf in the long colt case. I mean, there is error of course, and I measured from a 4 inch barrel, not the 5 inches of my 627. Just some data FYI, make of it what you will. Link to comment Share on other sites More sharing options...
357454 Posted February 14, 2020 Share Posted February 14, 2020 A little late to the Party? I load the 158 Berrys to an OAL of 1.207 with 3.6 grains of Clays, Average velocity is 793, Extreme spread is 22, just makes 125 PF in a 6 1/2" barrel 627. . This should give you a good starting point. Link to comment Share on other sites More sharing options...
ysrracer Posted February 15, 2020 Author Share Posted February 15, 2020 (edited) On 2/13/2020 at 5:47 PM, 357454 said: A little late to the Party? I load the 158 Berrys to an OAL of 1.207 with 3.6 grains of Clays, Average velocity is 793, Extreme spread is 22, just makes 125 PF in a 6 1/2" barrel 627. . This should give you a good starting point. In my 627 5" Performance Center Name: 3.7 Clays 158gr Berry's Bullet Shots: 6 Average: 748 ft/s SD: 20 ft/s Min: 730 ft/s Max: 776 ft/s Spread: 46 ft/s Power Factor Average: 118 Power Factor Low: 115 Power Factor High: 122 Weight: 158.0 gr. Edited February 15, 2020 by ysrracer Link to comment Share on other sites More sharing options...
Vincerama Posted February 18, 2020 Share Posted February 18, 2020 On 2/13/2020 at 11:03 AM, Vincerama said: 3.6 grains (actually more like 3.55) of Ramshot Competition averaged 891 fps = 134 pf Sorry, It should have said 841 fps NOT 891 fps. 3.6 grains (actually more like 3.55) of Ramshot Competition averaged 841 fps = 134 pf Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now