14 March 2004, 04:16
interboat9.3 Twist Rate
CZ tells me their 9.3x62 has a twist rate of 1-9. Doesn't that seem a little fast to you guys? Any thoughts?
My Krieger barrelled 9.3x64 has a 1 in 14" twist and works good with 286gr. bullets and spectacular with the 250gr. B-Tips.
14 March 2004, 14:35
MolonLabe416I've just become interested in the 9.3x62.
The March 2004 issue of The Accurate Rifle has an article on the 375 H&H by Kevin Robertson (author of The Perfect Shot). He also talks about the 9.3. He states on page 61 that "All 9.3x62mm's have a 1 in 14 inch twist rate."
Again, I just started thinking seriously about this cartridge in the last week or so, which is why I remembered the article. Finn Aagaard spoke very highly of it in his book on rifles as well. I've not had time to do any other research yet.
1 in 14 makes more sense to me. Perhaps some of the more experienced users like Mr. Atkinson will chime in.
14 March 2004, 17:08
JustAWeldorinterboat, a 9 twist does seem fast. If it has an adverse
effect on accuracy, I haven't read anything about it in the
posts here and elsewhere by seemingly happy CZ 9.3 owners.
My own 9.3x62 was barreled with a 14 twist and shot the 286
partitions well. Considering the available bullets in this
caliber, I can't imagine one that wouldn't be well
stabilized by a 12 twist. JMHO
14 March 2004, 23:51
Danny PayHi
In new CZ catalog you can read under specification chart that their 9,3x62 has a 1/10 inch twist , if this not a printing error, then it would be very nice if one uses heavy bullets like 320 grain WL which can be only launched at lower velocity.
regards
danny
15 March 2004, 12:32
JStordahlI was looking at 9.3 Krieger barrels, and they offer a 1/12 twist.
15 March 2004, 14:12
AtkinsonI have only used 1x14 twist Lothar Walthers, and Kriegers, but I was not aware that you could get any other twist in the USA...at any rate I will stick with the 1x14 as it handles 230 to 320 gr. bullets very well indeed.........If it ain't broke, don't fix it...
15 March 2004, 15:03
Rick RMy Douglas barrel has a 1 in 12" twist and does well with the 286 gr bullets even the Barnes X. I may have to try a box of 320gr Woodleigh's just to see how they do. The boys at Douglas will do any twist you want down to 1 in 6" in case you want to launch harpoons from your 9.3
Rick
18 March 2004, 09:20
RottenendI bought a CZ550 9.3x62 last August. Even though CZ claims 1 in 9" (or 1 in 10"), mine measured out at about 1 in 14". I became suspicious when I first cleaned the barrel. Looking down it from the muzzle, it didn't appear to be as steep as my 1 in 10" .257R or .270. Be that as it may, it still shoots superbly with 250 gr Noslers, 270 gr Speers and Rel 15. I bought my 2nd CZ last month, a Model 527 .223 for my wife. I sure do like these rifles. For the price, the quality and shootabilty certainly exceeds that of Ruger, Remington and Winchester. I'm now contemplating a 6.5x55!!
18 March 2004, 12:23
interboatThanks for the input, Rottenend. I like the CZs a lot myself, own three - 9.3x62, 375 H&H and 416 Rigby - and would buy another in a minute. Strange, though, about the barrel twist thing. Do you think they just don't know? Rate of 1-9 seems way too fast, 1-14 makes me feel a lot better. Oh well, as long as they shoot.