Cheap Precision

[ForestGrump]

Why don't they make the 631 in .22 cal? It would be nice to have it around.

Slavia 622 maybe 40 or so years old, still flattens .22 hobby's like a pancake! So any 630 or 631 will last just about a lifetime or 2.

[ETA]

Look down the receiver tube and barrel of a CZ630/631 and you will likely see what I mean. If you hold the rifle sideways and view down the tube and barrel you can see that the barrel is not in perfect alignment with the tube. It likely droops downwards. If you can't see this then place a yardstick along the top of the receiver tube and slide it towards the barrel until you have more than half the stick over the barrel. You will likely notice that the yard stick and barrel are not parallel. Droop.

That is a really good way to check for drooping ......

Droop is not a new thing in airguns. Many Weihrauch airguns are now "registered' for use with scopes so they don't have droop. Some buyers still end up with occasional HW rifles with droop. Diana rifles more often have droop. As I mentioned previously, I have seen it in my Diana 36, 38, and 52. I have also seen it in a Diana 24, CZ-630, CZ-631, and Hatsan rifles.

So far I only own 5 Diana's so far, the collection is still growing. Only one, the D36 has a slight droop on it, it's very slight that so hard to notice, only by looking down in to the bore very carefully. The rest are so perfectly straight, I mean straight like 110%. I found thru testing droopy barrel has less range of accuracy POI from its trajectory than a straight barrel.
Now since Todd had mentioned about D24 droopy barrel, I'm a bit concerned since that's my next to get list for Diana..... in 22 ofcourse.

Here is a good droop article by Tim Mac http://www.mac1airgun.com/droopers.html

HTH,
Todd

That's a very excellent article.

The D24 should have no problem with a scope. I got one a few month back and it scoped fine. I didn't notice any significant droop.

[TCooper]

It would be real nice if Diana has started putting less (or no) droop in rifles sent to Canada and the USA. This is a possibility. The D24 that I checked was many years ago and it definitely was not a TO5. Maybe the factory finally adjusted the barrel angle on the new versions... but this is just a guess. We would need to hear from a dozen owners of each new model to get an idea if the droop has been reduced and is now much less likely.

I think my D36 was a mid 90s model. My D52 was an old 1987 model. My D38 was a 1988 model. My old HW35 was a 1980 model. All these older rifles had droop.

As I mentioned previously, a small amount of droop is not a bad thing. Actually, a small amount might be good because you could use a scope or an aperture sight successfully. Droop does not effect accuracy, but it effects your ability to sight-in the rifle.

Next time you are at an airgun dealer have a look at some Hatsan and CZ rifles. Sometimes you can find them with very obvious droop. I would avoid those specific rifles because I like scopes. An iron sight shooter would be fine with them. The other option is drooper mounts.

A local dealer sells CZ rifles. I have seen many with droop but the last one he had appeared to be droop free.

Droop is nothing to worry about. It's just a pain in the butt to have to buy a special mount to use optics.

Todd

[airbuddy3]

My Diana 24 is a TO5 , and I have no descernable droop ..and I really
looked for it .The Slavias have a varying degree of droop ..I have a 630
you can see the droop visually and the 631'S its there but harder to see
but I use those with Irons ..but like Todd said a compensator mount and you are set ..maybe some shims will take care of it in some cases .

Frank