A pinned barrel has a pin or pins that go through the frame/receiver and the barrel in order to fasten the two together. The 455 does not have a pinned barrel; it has a slip fit barrel, held in place by the grub or set screws. The barrels for all 452's except 17HM2 are threaded to the receivers. The CZ 452's in 17HM2 are pinned.
So...take out the grub screws and everything should be fine..?
You are correct, but for someone asking about the differences between pretty well-known models, I didn't think I'd need to go that far down the explanation road.I didn't know the 452, 17M2s weren't threaded...that's surprising. If that's the case, I'm glad I stopped short of having one imported! (which I almost did)
Yours must be unique. All others are pinned. See, for example, the following threads in which the information is contrary to your contention:
h ttp: / /www.rimfirecentral.com/forums/showthread.php?t=375760
h ttp: / /www.rimfirecentral.com/forums/showthread.php?t=155389
h ttp: / /www.rimfirecentral.com/forums/showthread.php?t=576627
Unique? Maybe... I only have one to go by... but it was imported from a special run of HM2's, so I doubt that it is the only one... the company had made many special orders of HM2's.
P.S - I am not "contending"... I am stating what my rifle is... as opposed to "reading" RFC threads... and despite your vast internet knowledge... you cannot make a statement about the design of "all others," because I doubt that you have examined "all others."
... freezing the barrel lug ...
Your mind is made up; suit yourself and believe what you like. CZ 452's in 17HM2 are pinned.
I think you will be happy with any of the CZ rifles you listed!
The YoDave trigger kit is a must for me as is the single round feed ramp magazine. Get as much magnification as you can and parallax adjustment!
I have a 6-18x 40mm and could go for more zoom even @50 meters.
It is not what I "believe"... I HAVE ONE... AND IT IS THREADED!
I have owned close to 30 CZ rimfire rifles, three of which were 17 HM2's... and still own six CZ 452's and 453's... how many CZ 452 HM2's have you owned? I'm guessing, none... you are just online reading the experiences of others.
The crossfire is not a great choice at $300, as it's only a .22 scope in my opinion. So, kind of limiting. Spend a bit more and get a better AO scope. The Diamondback 4-12AO is pretty good if you can find one.
This one would be pretty good for $200:
http://frontierfirearms.ca/bushnell-3-12x40-bdc-reticle/
or this one
http://frontierfirearms.ca/bushnell-trophy-xtreme-4-16x-44mm/
for $270, but it's a little heavy.
Oh, and which cz? I really like the 28 inch barrelled 452 ultra lux because of the way it points offhand (more than the american), but they are all great. The best way to decide is to try them all out.
^ just what Jon said, for 50 yard benchrest the least magnification I'd ever use would be 16x or 18x and adjustable paralax is a must, with side focus being more expensive then adjustable Objective.
You've guessed correctly that I don't own one, but that does not prevent me or anyone from learning more about them. At the same time, people often own things without knowing everything about them.
In any case, we may be talking about apples and oranges. A very well respected CZ smith who posts on RFC under the name djdilliodon is unequivocal that the CZ 452 American in 17 HM2 is pinned. That's not in question. Unfortunately it is less clear whether the 452 Varmint in that caliber is pinned or threaded. I don't know and can't find corroborating information either way. If it is threaded and you have a CZ 452 Varmint in 17HM2 then I owe you an apology. And with that, I humbly withdraw from this bone of contention.
Thanks for the suggestions! Everyone says to stay away from Vortex but no one is telling me why... Is 4-18x a thing? Am I making this up?
Also, I'm leaning more towards the 452 just given that the barrel is threaded to the receiver and I have no interest in swapping out for a .17HMR... thanks for the clarification!
Thanks for the suggestions! Everyone says to stay away from Vortex but no one is telling me why. Like I said, I've had good experiences with them in the past. That said, I'm not sold on them and I'm open to suggestions! Couldn't agree more on having an adjustable parallax, that is a MUST. This rifle will mostly be used off the bench, but I may do some plinking and small game hunting eventually, so while I can appreciate having a 6-18x scope, I feel starting at 6x may be limiting myself. Is 4-18x a thing? Am I making this up?
Also, I'm leaning more towards the 452 just given that the barrel is threaded to the receiver and I have no interest in swapping out for a .17HMR... thanks for the clarification!
Vortex? I have experience with the Crossfires, including one that had to go back for warranty service. Glass quality wasn't there anyway, so when their warranty center called (VERY professional/prompt) they offered to send me the same model back. After some back and forth...telling them my reservations about trusting another Crossfire, they agreed to send me a Diamondback 4-12 AO instead. Still not a stellar scope, but a big upgrade from the Crossfire and it worked just fine. Concurrently, I had a Viper HS 4-16x44 on my .223 varmint gun and that scope was pretty decent. Used that for several years until I tried a Sightron SIII. Night and day, the Sightron was like HDTV compared to the Viper HS which until that point...I thought was an awfully good scope. That experience prompted me to try the Sightron S1 for my next rimfire/budget-sensitive scope purchase, and it's been great so far. So, with that in mind...I feel compelled to suggest scopes other than the Crossfire, simply because scopes like the Viper HS (WAY better than it) aren't even the best scope you can get in THAT price range. Same proved to be true for the Crossfire. At least in my opinion.
I have a Leupold 6-18x40 with AO (focus down to roughly 22 yards) on my 452 Varmint at the moment. Great scope, but note that it won't focus clearly and correct parallax at 20 yds.
The 452 Varmint has been impressive for a $600 rifle. I still have a 455 American, but I think it'll be the last 455 I buy. It's accurate in it's own right, but can't stay with the 452.
If you plan to carry the rifle at all in a hunting context, I'd suggest you buy something lighter to hunt with. None of the CZ Varmints even approach what I'd call a hunting weight. The term boat anchor comes to mind, in fact.
...I had a Viper HS 4-16x44 on my .223 varmint gun and that scope was pretty decent. Used that for several years until I tried a Sightron SIII. Night and day, the Sightron was like HDTV compared to the Viper HS which until that point...I thought was an awfully good scope. That experience prompted me to try the Sightron S1 for my next rimfire/budget-sensitive scope purchase, and it's been great so far. So, with that in mind...I feel compelled to suggest scopes other than the Crossfire, simply because scopes like the Viper HS (WAY better than it) aren't even the best scope you can get in THAT price range. Same proved to be true for the Crossfire. At least in my opinion.