JMW Posted March 13, 2011 Report Share Posted March 13, 2011 I have just bought a new cz 527 in 22 hornet, but I am having a few problems, (1) rounds will not cycle from the magazine, only way I gan get this to work is to push the bolt from the back without using the bolt handle. (2) I have started to reload my own and I am having trouble with the overall cartridge length, I have some factory 35 grain ammo which fits in the mag but with the other bullets I have bought I have to seat them very deep to get them to fit into the mag, this results in the bullet being seated after it starts to narrow, the brass gets squeezed round the bullet and my concern is excess pressure. Bullets I am trying are 40 grain siera blitzking, 45 grain sp, 55 grain fmj. Has anyone modified the mag to take longer rounds? Thanks in advance Quote Link to comment Share on other sites More sharing options...
wymberley Posted March 13, 2011 Report Share Posted March 13, 2011 I have just bought a new cz 527 in 22 hornet, but I am having a few problems, (1) rounds will not cycle from the magazine, only way I gan get this to work is to push the bolt from the back without using the bolt handle. (2) I have started to reload my own and I am having trouble with the overall cartridge length, I have some factory 35 grain ammo which fits in the mag but with the other bullets I have bought I have to seat them very deep to get them to fit into the mag, this results in the bullet being seated after it starts to narrow, the brass gets squeezed round the bullet and my concern is excess pressure. Bullets I am trying are 40 grain siera blitzking, 45 grain sp, 55 grain fmj. Has anyone modified the mag to take longer rounds? Thanks in advance Hi, Can't believe I'm saying this, but you should have bought a 223. Sorry, Mate, not being funny, but it's probably true. Your rifle has a 1 in 16 twist rate for a reason which is to do with the rounds, or more precisely, the length of, fired from it. A quick rule of thumb formula by George Greenhill indicates that this is fine for a 35gr V Max. Sierra don't readily give there bullet lengths, but a 40gr and 55gr of the same type would require 1 in 12 and 1 in 9 respectively to be sure of stabilization. The next problem is even for 40 gr bullets of the ballistic tip type of profile/length (the Hornet specific rounds are different) whereas they may well fit in the chamber, modifying the mag is simply not possible. If you can get your hands on one (not easy) there is a dummy mag/follower for the CZ which allows single shot loading. As an indication, I'm currently having a fiddle and my 40gr Nosler BTs are somewhere between 1.910 and 1.950" in length (and still cleasr of the lands). Sorry, can't help with the bolt. Cheers Quote Link to comment Share on other sites More sharing options...
rabbithunter Posted March 13, 2011 Report Share Posted March 13, 2011 try and get hold of some hornady 35g v-max Quote Link to comment Share on other sites More sharing options...
Andy H Posted March 13, 2011 Report Share Posted March 13, 2011 34 grain dogtown bullets from Midway UK. Quote Link to comment Share on other sites More sharing options...
JMW Posted March 13, 2011 Author Report Share Posted March 13, 2011 Thanks for the info, I applied for the hornet as a 223 was a bit too much power for what I needed it for, 150 yard rabbit and fox. I will have a look for a dummy follower as I don't mind it being a single shot, and the lighter bullets will have a flatter trajectory anyway, How would I know if the bullet was on the lands or too close? Just use the COL as stated for the bullet? Thanks again Quote Link to comment Share on other sites More sharing options...
Dekers Posted March 13, 2011 Report Share Posted March 13, 2011 I have to suggest, as someone else said, if you are looking for heavy heads, 55g ................. A Hornet is definitely not the tool! So you will have issues, probably insurmountable! Quote Link to comment Share on other sites More sharing options...
casts_by_fly Posted March 13, 2011 Report Share Posted March 13, 2011 have a look out for 45 gr flat nose bullets. They are designed for hornets and for shooting 150 yards or so they will be what you want. The 35 gr v-max is also an option as stated. Thanks Rick Quote Link to comment Share on other sites More sharing options...
markbivvy Posted March 13, 2011 Report Share Posted March 13, 2011 40 grain blitzkings work very well in a hornet, i have used thousands of them. the mag will need some work on it to make them feed. sure it been done a few times on here. Quote Link to comment Share on other sites More sharing options...
markbivvy Posted March 13, 2011 Report Share Posted March 13, 2011 (edited) Hi, Can't believe I'm saying this, but you should have bought a 223. Sorry, Mate, not being funny, but it's probably true. Your rifle has a 1 in 16 twist rate for a reason which is to do with the rounds, or more precisely, the length of, fired from it. A quick rule of thumb formula by George Greenhill indicates that this is fine for a 35gr V Max. Sierra don't readily give there bullet lengths, but a 40gr and 55gr of the same type would require 1 in 12 and 1 in 9 respectively to be sure of stabilization. The next problem is even for 40 gr bullets of the ballistic tip type of profile/length (the Hornet specific rounds are different) whereas they may well fit in the chamber, modifying the mag is simply not possible. If you can get your hands on one (not easy) there is a dummy mag/follower for the CZ which allows single shot loading. As an indication, I'm currently having a fiddle and my 40gr Nosler BTs are somewhere between 1.910 and 1.950" in length (and still cleasr of the lands). Sorry, can't help with the bolt. Cheers done it on my own and 3 others, but tell me why please. Edited March 13, 2011 by markbivvy Quote Link to comment Share on other sites More sharing options...
markbivvy Posted March 13, 2011 Report Share Posted March 13, 2011 http://forums.pigeonwatch.co.uk/forums/index.php?/topic/144119-hornet-bullets/page__p__1228440__fromsearch__1#entry1228440 Quote Link to comment Share on other sites More sharing options...
willy1 Posted March 13, 2011 Report Share Posted March 13, 2011 If you don't want to modify the mag or use a dummy mag, try some Sierra 40 Hornet SP bullets.These are made for the .22 Hornet and have worked well in mine. Alan Quote Link to comment Share on other sites More sharing options...
wymberley Posted March 13, 2011 Report Share Posted March 13, 2011 done it on my own and 3 others, but tell me why please. Mark, hi, No, I don't mean that you can't modify the mag as such - I even managed to fiddle a Ruger rotary to take RWS 22WMR with springs flying everywhere! No, I meant (but admit didn't say very clearly) to an extent when using the bullets detailed at the end of my post. I regret any confusion that this may have caused. I hadn't thought about the Sierra bullets that you mentioned - they sound promising. I'm currently play around the 3000ft/sec ish figure with the single shot length and would be really interested to find out what you developed with the Sierras in terms of velocity and OAL to see if I can also fiddle the Weihrauch mag to suit if necessary. One problem is Sierra don't seem to publish their bullet lengths - having said that, they probably do and I missed it! Cheers, Phil Quote Link to comment Share on other sites More sharing options...
markbivvy Posted March 13, 2011 Report Share Posted March 13, 2011 interested to find out what you developed with the Sierras in terms of velocity and OAL i have it all written down some where, if i can find it will send it you. but i do remember the 45 grain soft point where a good 100 fps faster then the 40 grain blitzkings, and shorter. load was 12.5 lil gun, small pistol primers. never done a Weihrauch mag so cant help you with that bit phil. do know a mate who removed the green tips of the blitzkings to get them in a rifle that i forget the name of right now,and accuracy was never was a problem or expansion. if i had not gone onto the 40grain blitzkings my hornet would be history as it hated 35 grainer's at anything past 150 yds. Quote Link to comment Share on other sites More sharing options...
wymberley Posted March 13, 2011 Report Share Posted March 13, 2011 interested to find out what you developed with the Sierras in terms of velocity and OAL i have it all written down some where, if i can find it will send it you. but i do remember the 45 grain soft point where a good 100 fps faster then the 40 grain blitzkings, and shorter. load was 12.5 lil gun, small pistol primers. never done a Weihrauch mag so cant help you with that bit phil. do know a mate who removed the green tips of the blitzkings to get them in a rifle that i forget the name of right now,and accuracy was never was a problem or expansion. if i had not gone onto the 40grain blitzkings my hornet would be history as it hated 35 grainer's at anything past 150 yds. Mark, Many thanks, that would be good. Just ready to fire off a 12.5 lil gun load on the way up to a final load given to me by the Ballistics Director at Hodgdons. At the moment the groups are good (5shot, clover leaf, 0.244" at 50yds) so I'll keep going. Using Winchester SR primers though: Was told the load was component sensitive so it would be silly not to do as was recommended. Cheers, Phil Quote Link to comment Share on other sites More sharing options...
JMW Posted March 14, 2011 Author Report Share Posted March 14, 2011 I have bought some Sierra 40 Hornet SP which are very short and will fit in my mag without much trouble. If these shoot well I'll stick to these, I have sorted the bolt problem. The bolt is fractionally smaller than the bolt hole, so there is a fraction of movement side to side in it, but if u hold the bolt handle with a finger on the handle shaft it feeds ok. What was happening was the bolt was moving sideways rather than forward and getting stuck. Quote Link to comment Share on other sites More sharing options...
nicholiath Posted March 22, 2011 Report Share Posted March 22, 2011 Hi, whereabouts in lincs are you? i am also in lincs and have a 527 hornet which i modified a spare mag for 40gn Blitzkings which stabilise superbly with ragged hole groups at 100yds.Basically you remove the plastic slab at back of mag and sand a bit off it to allow longer rounds in, you also modify carrier by adding a spacer to flange at rear of carrier, i did not like this and cut carrier in half and putty welded a small length of metal in gap this works great. Quote Link to comment Share on other sites More sharing options...
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