There are some persistant rumors about CZ's that keep cropping up in this forum which are, in my experience ,wrong.
The centerfire,big bore rifles 550's DO NOT have plastic followers or anything else for that matter. I own two and have seen or shot a dozen others. Their Varmint model MIGHT but I haven't seen one.
The saftey on the big bore 550's works JUST LIKE the Remington 700 safety ... it IS NOT reversed.
The small bore centerfire action is not the same as the 550 action and the saftey on them IS reversed for some weird reason. I don't have a 527 but my hunting pard has two (.223&.204) and, I believe the detachable mags ARE plastic.
Regarding the 9.3X62 vs the 9.3X74R, every thing I've read and every load manual I have, show identacle balistics for the two rounds. The idea being the 9.3X74 is a rimmed version of the 9.3X62 for use in double rifles. The slightly larger case providing lower pressures for hinged rifles.
Further the .375H&H shoots the same weight bullets as the 9.3 roughly 200fps faster in most cases.
If someone has opposing experience I welcome their response.
I have a 527 Carbine .223 and the magazines are steel and not plastic.
Take this for its worth (very little), I suspect that anywhere under 200 yards the critter hit in the boiler room by a 286 grain 9.3 bullet and 300 grain 375 bullet is not going to know the difference. 200fps difference in muzzle velocity is neither here nor there. Too much ballistic gack and not enough stalking time I suspect ;-)
Experience is something you get, just after you needed it.
The 9.3x62 gets a lot of press here and in print. I believe that is why so many people dote on it so. The 375 H&H is a larger, more powerful rifle, period. Always will be. The 35 Whelen is a slightly smaller, slightly less powerful rifle, period. Always will be. There is no magic. One either wants a 9.3x62 or they want a rifle that's a bit more powerful or a rifle that's a bit less powerful. It isn't all that difficult to understand.
Our God reigns. Harrumph!!! I often use quick reply. My posts are not directed toward any specific person unless I mention them by name.
I have a 35 Whelen, 9.3x66 Sako and have owned and hunted with a 375HH. The 9.3 is the best of all worlds, recoil is similar to a hot loaded Whelen and thumps like a 375, actually "on target results' are the same as with the 375. With the 9.3 x66 the factory powder is VV-550 and uses 71gr with the 286gr and 73 gr powder with the 250gr bullet, with regular powder i am hoping to get like results with around 66gr powder , lowering recoil a bit more.
The 9.3x62 gets a lot of press here and in print. I believe that is why so many people dote on it so. The 375 H&H is a larger, more powerful rifle, period. Always will be. The 35 Whelen is a slightly smaller, slightly less powerful rifle, period. Always will be. There is no magic. One either wants a 9.3x62 or they want a rifle that's a bit more powerful or a rifle that's a bit less powerful. It isn't all that difficult to understand.
Couldn't agree more. Thus my Pre 64 M70 in 9.3x62, built by our own Redneck and finished by Charley Santoni in one of D'Arcy Echols Legend, Edge filled, stocks topped with a VX3 1.75-6.
Recoils is VERY tolerable; akin to a heavily loaded 220 gr 30-06.
Wow! I would never have believed that these two different rifle/cartridge combinations would produce such different figures. That is more than 60% more recoil - for the Ruger 375, over the CZ 9.3X62. For those that have shot both - do they really feel THAT different?
Would they be that different - on game?
I guess if a Cape Buffalo in Africa ever became a reality - only the 375 would be legal in most countires. But over here, I wonder what the practical differences would be?
What are your thoughts?
Very little difference will be seen on game. I base this on my use of the 9.3 X 62 on Cape buffalo compared to other who have used the .375 H&H. Dead buffalo are still dead, and they never go far.
60% more recoil does not make them 60% deader!
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Would a hot loaded 9.3x62 approach the factory .375's? Just curious. I have a Mauser that I was thinking of putting a 9.3 x 62 barrel on.
Check John Barsness' writings on that subject. From what I gather, he's killed a bunch of stuff with that round and has pet loads for the 250 gr. NAB and 286 gr. NPT. Performance with those enhanced loads gets pretty close to .375 H&H performance. Now, I guess one could push the H&H and widen the gap.
I'm building a 9.3x62 on an FN military Mauser action using a #3 contour CM Shilen at 22". Jim Kobe is working on it as we speak. I also have a Winchester Super Express in .375 H&H and some would think that would be a duplication. The Mauser will be a full pound or more lighter, all up, reportedly kicking less and killing stuff about as dead.
If you want 375 H&H 300gr velocity from a 286 Nosler Partition in a modern 9.3 X 62, try RL-17. I did last week and I'm getting 100 fps more than with RL-15.
As to recoil? Well, my 7.2 lb (with scope) Tikka (22.4") at those top velocities is more than either a 7.5 lb 338 WM (250gr at 2750) or a 8.5 lb 375 H&H (300gr at 2550), barrel lengths equal!
Getting pretty close to 50 ft-lbs! But I'm used to 60+, so it's no big deal as far as I'm concerned.
But contrary to much of what's posted on this thread, the 286 NP passes the 300gr NP from the H&H at 200 yards in both momentum and kinetic energy. Also ahead of the .338 WM and it's 250 NP at all ranges in momentum, except in trajectory the 338 is slightly flatter.
I'll not vouch for the same results in anyone else's rifle... just in mine.
If you want 375 H&H 300gr velocity from a 286 Nosler Partition in a modern 9.3 X 62, try RL-17. I did last week and I'm getting 100 fps more than with RL-15.
As to recoil? Well, my 7.2 lb (with scope) Tikka (22.4") at those top velocities is more than either a 7.5 lb 338 WM (250gr at 2750) or a 8.5 lb 375 H&H (300gr at 2550), barrel lengths equal!
Getting pretty close to 50 ft-lbs! But I'm used to 60+, so it's no big deal as far as I'm concerned.
But contrary to much of what's posted on this thread, the 286 NP passes the 300gr NP from the H&H at 200 yards in both momentum and kinetic energy. Also ahead of the .338 WM and it's 250 NP at all ranges in momentum, except in trajectory the 338 is slightly flatter.
I'll not vouch for the same results in anyone else's rifle... just in mine.
Ok, guys if your going to do these comparisons then do them at the same pressures. The .375 H&H will give you over 2600 fps. at 60 K psi. that being the quote from both the A Square book and the Lee book. Does anyone have any pressure data, theirs or manuals, for the 9.62 ?
Sure you can load a .375 H&H to 2600 but why bother? I killed elephant and buffalo with a 300 grain bullet at 2500 last year. As near as I can tell, it killed 'em just as dead as my .458 a few years earlier.
I think the 9.3x62 would do just about the same with 286 grain bullets, even though I think the practical velocity is about 2400. Kevin "Doctari" Robertson has a 9.3 which has accounted for 600 cape buffalo. The nice part about the 9.3 is it mostly comes in lighter rifles.
A good read is "Heat, Thirst, and Ivory" by Fred Everett. The author poached dozens of elephant when he was a teenager. Each kill is described in detail. As near as I can tell, there was very little difference between his 7mm Mauser and his 9.3x62.
Perhaps someone should come out with a .375-06, or .375 Whelen. That would be something I'd like to see.
Last edited by IndyCA35; 04/17/12.
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Democrats would burn this country to the ground, if they could rule over the ashes.
It's not hard to jack up the pressure and make a smaller cartridge perform like a larger one. I see people use this method on here all the time to justify their personal preferences in cartridges. People compare their pet AI rounds loaded at high pressure to mild factory rounds in the parent case. The 280AI is one example. It's laughable.
Our God reigns. Harrumph!!! I often use quick reply. My posts are not directed toward any specific person unless I mention them by name.
I don't have any photos but Google foo it. Fred Zeiglen builds bolt rifles for it. Anyone can rebarrel a Rem. pump and you get .375 H&H performance in a pump. You could also put a 9.62x62 in the same foot print and have a lot of fun. I had mine built before the 9.62 became widely available. Al to of fun hog hunting or dark timber game hunting. You can run a 235 gr.375 at about 2,800 fps. and rock on.
For more fun you could do a .411 Hawk and get a clone of the 450/400 3" or 400 gr. at 2150 fps. from a pump gun.
The only fly in the pump gun tea is that COL is limited to 3.25" because of the ejection port on the gun.
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