Loki999 Posted August 30, 2011 Share Posted August 30, 2011 Hi all, I'm going to start reloading for my cz shadow, and i talked to some shooters who told me that they use a shorter oal for the shadow then for other 9 mm guns. They use 28,7 mm or 1.1299 inch or less. What oal do you use to have the best accuray? I will use frontier plated bullet 124 grain, winchester small pistol and 4,3 grain VV N320. brass is magtech. regards Patrick Link to comment Share on other sites More sharing options...
DWFAN Posted August 30, 2011 Share Posted August 30, 2011 With the CZs, some bullet profiles hit the rifling. Its best to load some dummy rounds at different lengths to see what will work or chamber by hand in your gun. I used a chamber reamer to open it up so I could run the same ammo I run in my 1911's. Link to comment Share on other sites More sharing options...
CeeZer Posted August 30, 2011 Share Posted August 30, 2011 Hi all, I'm going to start reloading for my cz shadow, and i talked to some shooters who told me that they use a shorter oal for the shadow then for other 9 mm guns. They use 28,7 mm or 1.1299 inch or less. What oal do you use to have the best accuray? I will use frontier plated bullet 124 grain, winchester small pistol and 4,3 grain VV N320. brass is magtech. regards Patrick When I ran Frontier bullets I had to load them even shorter. You are most likely looking at OAL 1.10". Link to comment Share on other sites More sharing options...
Neomet Posted August 31, 2011 Share Posted August 31, 2011 Remember with shorter OAL it takes less powder for the same bang. Start low and work your way up. Also my advice would be to stay away from Clays, which while Downey soft, does not like to be loaded short at all. I have run IFP 121s at 1.1 and 147s at 1.2. Link to comment Share on other sites More sharing options...
dr2e Posted August 31, 2011 Share Posted August 31, 2011 i have loaded a MG 124 cmj in front of 4.1gn of n320, federal spp with a oal of 1.115" and had good results in my shadow. Link to comment Share on other sites More sharing options...
CZinSC Posted August 31, 2011 Share Posted August 31, 2011 MG 124FMJ, 4.3gns N320, 1.150" OAL, works best in my SP01. Tested 1.130 up to 1.165, and 1.150 was best accuracy. 4.3gn gets me to about 130PF, +/- 2PF. Link to comment Share on other sites More sharing options...
Loki999 Posted August 31, 2011 Author Share Posted August 31, 2011 Thanks! i will post the results Link to comment Share on other sites More sharing options...
burningsquirrels Posted August 31, 2011 Share Posted August 31, 2011 I use 124 to 125 mg or zero, loaded to 1.085, and 4.05g of titegroup. Never left me wanting, and flies 132pf nice and safe. I used it because a lot of other people at the time used it with good results. Link to comment Share on other sites More sharing options...
CeeZer Posted August 31, 2011 Share Posted August 31, 2011 OP is using Frontier bullets, they have 'fat' nose and hit rifling much sooner. Patrick, you need to find out OAL for the bullet yourself, first; then start developing load for it. 4.3gr for the bullet seems a little too much. If your OAL is around 1.10", start at lower powder charge like 3.6gr. Link to comment Share on other sites More sharing options...
59Bassman Posted August 31, 2011 Share Posted August 31, 2011 MG 124 CMJ here in CZ 75 Shadow - 1.12 OAL, 4.1 gr TG. Link to comment Share on other sites More sharing options...
bradthegunmaniac Posted September 1, 2011 Share Posted September 1, 2011 I have shot 1.160 to 1.110 all function fine but I load 147 BBI at 1.125 Link to comment Share on other sites More sharing options...
carbon9 Posted September 1, 2011 Share Posted September 1, 2011 1.09 OAL MG 124gr CMJ 4.2gr VV N320 CZ Shadow and TS no problems Link to comment Share on other sites More sharing options...
JonF Posted September 2, 2011 Share Posted September 2, 2011 Montana Gold 124gr JHP and i load them 1.090" for my SP01. Link to comment Share on other sites More sharing options...
8082011 Posted September 3, 2011 Share Posted September 3, 2011 147gr Precision Moly over 3.0gr of N320 loaded to 1.10. Gives me 131pf Link to comment Share on other sites More sharing options...
rfwobbly Posted September 3, 2011 Share Posted September 3, 2011 (edited) The freebore is shorter on the CZ 9mm pistols. The result is than Round Nose are easier for the new reloader to work with, especially the Berry and Precision Delta RN. After that, each bullet has to be considered on its own merits. This because there are tens of bullet nose shapes and hundreds of interpretations of each of those. Just because a MG 124gr FP works at certain OAL does not mean that a Zero 124gr FP will work at the same OAL. Each bullet will have its own max OAL. Some bullets can get such a short maximum OAL that they should not be used in the CZ. Some bullets, like the XTP, come out shorter than Hornady's own recommendations. Here's a cartoon to demonstrate some of the issues... Suffice it to say that it is easier for you to tell us what bullet you've chosen than for us to tell you OALs. If you are looking for a starter bullet that will not have problems, then I highly suggest the Berry 124gr Hollow Base RN. Hope this helps! Edited September 3, 2011 by rfwobbly Link to comment Share on other sites More sharing options...
Sin-ster Posted September 4, 2011 Share Posted September 4, 2011 Here's a resource I found very handy. From a CZ forum, no less! COAL and Load Development Link to comment Share on other sites More sharing options...
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