Bwidpa Posted December 20, 2017 Share Posted December 20, 2017 Just got my first CZ (shadow custom from CZC). I'm used to loading my 147s to 1.14 OAL for an M&P Pro. Went to reload for the CZ and it wouldn't pass the plunk test with anything longer than 1.09 using BBI 147s. Xtreme and Everglades ammo 147 both pass the plunk test with my normal load at 1.14. I have a case of BBI sitting around and would like to use them, and I've tended to get better accuracy with coated vs plated out of my other guns. Just wanted to see if anyone else is going that short in their shadows? And if so how much are backing off the powder(if any)? I'm using titegroup in these loads. Not looking to ream the barrel just yet. Thanks in advance Link to comment Share on other sites More sharing options...
Mountbkr Posted December 20, 2017 Share Posted December 20, 2017 Normal for Shadow 2 from everything I’ve seen on here. I just bought one and the previous owner to me the same 1.090 oal Sent from my iPad using Tapatalk Link to comment Share on other sites More sharing options...
haiedras Posted December 21, 2017 Share Posted December 21, 2017 If you're using the current 147 bbi iteration, the bullet ogive is noticeably fatter at the base and does not taper as aggressively as the old lube grooved version. To load longer with bbis, you'll need to ream the chamber with a finishing reamer or use a fp bullet with a sharper ogive or RN. Link to comment Share on other sites More sharing options...
rowdyb Posted December 21, 2017 Share Posted December 21, 2017 yes, with different 147 bullets i load at 1.080" oal. not uncommon at all. Link to comment Share on other sites More sharing options...
4n2t0 Posted December 25, 2017 Share Posted December 25, 2017 (edited) I load to 1.09 for my Shadow with a FMJ 147gr bullet. Don't worry about the short length, use the OAL that works for the bullet/barrel combination. You might be able to drop the load a little but I would chrono first to see what you get before modifying the charge. Prior to getting my Shadow I loaded the same FMJ 147gr bullet to 1.135 with 3.6gr of Titegroup. When I shortened the OAL to work in my Shadow I really didn't see a difference at the chrono, maybe 10 fps, which is negligible. Edited December 25, 2017 by 4n2t0 Link to comment Share on other sites More sharing options...
muncie21 Posted December 25, 2017 Share Posted December 25, 2017 In my experience CZs need to be loaded a bit shorter than most. I run BBI/Bayou 135s (9mm) at 1.08-1.09. While dropping the OAL may not be a big deal, I'd still chrono and test the new rounds just to be sure. Link to comment Share on other sites More sharing options...
IHAVEGAS Posted December 25, 2017 Share Posted December 25, 2017 It is about the bullet. Shooting SNS 147 tc my CZ's like 1.15. 3.2 titegroup at 1.15 gives me about the same velocity as 3.0 at 1.12. Not sure what would happen if I went to 1.05, would not expect the powder to velocity relationship to necessarily be linear. Link to comment Share on other sites More sharing options...
reballz Posted December 26, 2017 Share Posted December 26, 2017 I run 147gr 3.2gr titegroup 1.135oalSent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
usmc90 Posted January 5, 2018 Share Posted January 5, 2018 Myself and several others I personally know have had our chambers opened a bit to accept longer OAL in our shadows Link to comment Share on other sites More sharing options...
slavex Posted January 5, 2018 Share Posted January 5, 2018 I run all my bullets at 1.1 for Shadow and Shadow 2, regardless of weight, so far in 9 if my own guns as well as a hundred or so other guns, no problems Link to comment Share on other sites More sharing options...
mauk517 Posted September 21, 2018 Share Posted September 21, 2018 what powder do you use and how much? Link to comment Share on other sites More sharing options...
Youngeyes Posted September 21, 2018 Share Posted September 21, 2018 MG 147 gr. OAL 1.10. VV320 3.7 gr Link to comment Share on other sites More sharing options...
GrumpyOne Posted September 21, 2018 Share Posted September 21, 2018 I've tried several different bullets with my CZ. With MG 115 JHP, I had to load at 1.085, with MG 147 FMJ I had to load the same. With some home cast 147's, I could load out to 1.150, and with PD 147 FMJ's, I could load out to 1.150. It all depends on the bullet ogive. My current load is 3.5 N320 with a PD 147 FMJ @ 1.150, gives me. 134 PF. Link to comment Share on other sites More sharing options...
MemphisMechanic Posted September 21, 2018 Share Posted September 21, 2018 (edited) On 12/20/2017 at 4:54 PM, Bwidpa said: Just got my first CZ (shadow custom from CZC). I'm used to loading my 147s to 1.14 OAL for an M&P Pro. Went to reload for the CZ and it wouldn't pass the plunk test with anything longer than 1.09 using BBI 147s. Xtreme and Everglades ammo 147 both pass the plunk test with my normal load at 1.14. I have a case of BBI sitting around and would like to use them, and I've tended to get better accuracy with coated vs plated out of my other guns. Just wanted to see if anyone else is going that short in their shadows? And if so how much are backing off the powder(if any)? I'm using titegroup in these loads. Not looking to ream the barrel just yet. Thanks in advance Ream the barrel. I cut my Walthers (which have equally short chambers) to take fat-nosed pills out to 1.160” Life is good now. With a long 147gr bullet shoved that deeply into the case, I was getting a fair number of case gauge failures because the sides of some older brass would bulge while loading. Send it over to a shop like Patriot Defense or Grams Engineering... or talk to a few of us forum members who can cut it for you. Edited September 21, 2018 by MemphisMechanic Link to comment Share on other sites More sharing options...
45 Raven Posted September 22, 2018 Share Posted September 22, 2018 Definitely agree with several others here who have recommended reaming the barrel. Any good 'smith can do it, it takes just a minute or two, and is not expensive. Just a little goes a long ways and saves lots of headaches. Link to comment Share on other sites More sharing options...
HesedTech Posted September 22, 2018 Share Posted September 22, 2018 (edited) Maybe someone already posted it, but why don’t you change bullets? My son shoots CZ Shadow 2 and Sp01 and I shoot Tanfoglio S2. Both of these require a very short OAL with both Eggleston RN and BB RN bullets, 1.08. We switched to ACME 147 FN, my son’s favorite, and I use PD 147 FMJ RN. Both of these bullets easily load at 1.14 in all our guns without reaming. BTW switching bullets and loading longer solved the bulging problem with CBC brass because of the depth the bullets were seated to. Also this is getting to be an old thread. Edited September 22, 2018 by HesedTech Link to comment Share on other sites More sharing options...
JDIllon Posted September 30, 2018 Share Posted September 30, 2018 I have been shooting 147FN, 1.149coal, but I'm switching to 124s because they have less recoil and the gun seems to like them just as well. JD Link to comment Share on other sites More sharing options...
JakeG Posted March 5, 2019 Share Posted March 5, 2019 I noticed my tango has to be 1.112 or smaller with blue bullets round nose! Link to comment Share on other sites More sharing options...
bigedp51 Posted March 5, 2019 Share Posted March 5, 2019 Read the post by Wobbly the moderator and look at his illustrations, and this applies to any pistol. How to determine Max OAL for a CZ Pistol https://czfirearms.us/index.php?topic=34225.0 Link to comment Share on other sites More sharing options...
hlpressley Posted March 5, 2019 Share Posted March 5, 2019 I noticed that I had to load significantly shorter 1.12 for my S2 where I can push out to 1.15 or maybe even longer with the SP-01 Shadow. Link to comment Share on other sites More sharing options...
Darrell Posted March 7, 2019 Share Posted March 7, 2019 On 12/25/2017 at 9:42 AM, muncie21 said: In my experience CZs need to be loaded a bit shorter than most. I run BBI/Bayou 135s (9mm) at 1.08-1.09. While dropping the OAL may not be a big deal, I'd still chrono and test the new rounds just to be sure. I load Bayou 135's at 1.130 in all my CZ's, I have to load the 105's at 1.030, and my 124 PD JHP at 1.080 Link to comment Share on other sites More sharing options...
Bulldog317 Posted March 7, 2019 Share Posted March 7, 2019 1.135 Blue Bullet 147 FN in SPO1, plunks no problem. Link to comment Share on other sites More sharing options...
ML123 Posted September 17, 2020 Share Posted September 17, 2020 On 3/7/2019 at 1:29 AM, Darrell said: I load Bayou 135's at 1.130 in all my CZ's, I have to load the 105's at 1.030, and my 124 PD JHP at 1.080 I am getting ready to load my first 9mm rounds on my new press for my Shadow 2. I did Wobbly's push test and I am coming up with 1.092-1.097 so I am going to go with 1.080 OAL to be safe. I am using a 147g coated truncated nose bullet from BBI. Is there a way to calculate powder load for a shorter than listed OAL? I am using Titegroup powder which according to Hogdgons load data 147g bullet at 1.010 is 3.2 grains for the low side. Should I start there or lower at 3.0? Link to comment Share on other sites More sharing options...
4n2t0 Posted September 18, 2020 Share Posted September 18, 2020 (edited) 16 hours ago, ML123 said: I am getting ready to load my first 9mm rounds on my new press for my Shadow 2. I did Wobbly's push test and I am coming up with 1.092-1.097 so I am going to go with 1.080 OAL to be safe. I am using a 147g coated truncated nose bullet from BBI. Is there a way to calculate powder load for a shorter than listed OAL? I am using Titegroup powder which according to Hogdgons load data 147g bullet at 1.010 is 3.2 grains for the low side. Should I start there or lower at 3.0? 1) The OAL's listed in manuals/data is completely useless so it doesn't matter that yours is "shorter than listed". 2) You aren't loading an FMJ so the charging window Hodgdon provides isn't very helpful. Generally, it takes less powder to move lead (coated). 3) Other forum members who have already tested a 147gr coated bullet with Titegroup should be able to provide you with charge weights. Maybe like the information provided below? lol. Edited September 18, 2020 by 4n2t0 Link to comment Share on other sites More sharing options...
ML123 Posted September 18, 2020 Share Posted September 18, 2020 11 minutes ago, 4n2t0 said: Thanks, I did NOT measure factory rounds in my barrel. My measurements are using the Bullet I plan to load using Wobbly's push method in the chamber of the gun I plan to use. I have a 1.080 OAL according to the method Wobbly described and I am asking if someone can tell me how to figure out were to start with Titegroup since 1.080 is LESS than the 1.010 that is cited in all the load data I have found on Titegroup. Apparently there is a formula out there that requires 6th grade algebra but I can't seem to find it anywhere? Link to comment Share on other sites More sharing options...
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