is 4.48, 4.49,4.50,4.51 pellet size is allowed in ISSF.

[rajemessage]

Dear All,

1)Please tel me,is 4.48, 4.49,4.50,4.51 pellet size is allowed in ISSF.

2) also suggest pellet size for styer lp 10, and Morini CM 162 EI.
3) and there is short version available in styer lp 10 and morini CM 162 EI.
is this version is allowed in ISSF.

yours sincerely

[David Levene]

1) Yes
2) Whatever brand, batch and size suits your gun. Many will be using 4.49 or 4.50. They would be a good starting point.
3)Yes

[lastman]

David is correct for 1 and 3.

I find 4.51 works best in my Styer, but each gun is different so try everything.

Good luck

[RobStubbs]

David is correct for 1 and 3.

I find 4.51 works best in my Styer, but each gun is different so try everything.

Good luck

My Steyr (LP10) test group was shot with 4.49's, but I always use 4.50, seems to fit better.

Rob.

[Rover]

I've JSBs at 4.53. It doesn't matter what size you put in...it's going to come out at 4.50 or thereabouts.

[RobStubbs]

I've JSBs at 4.53. It doesn't matter what size you put in...it's going to come out at 4.50 or thereabouts.

No it won't - for a start a gun can't size up a too small pellet, and b) the barrell may be slightly bigger or smaller than 4.50. If it didn't matter people wouldn't test and choose different sizes and manufacturers wouldn't sell them.

Rob.

Edit, yes Richard I appreciate not everything on sale is for a valid reason, but in this case it is.

[Richard H]

Rob I agree with most of what you wrote , but manufactures sell all sorts of stuff that doesn't matter. Just cause it's sold doesn't mean that it matters.

In this casemsize does matter

[Rover]

I guess that's why I said, "or thereabouts."

[RobStubbs]

I guess that's why I said, "or thereabouts."

Yes but you preceeded it with "it doesn't matter what size you put in" and it clearly does matter.

Rob.

[Rover]

Prove it... with empirical data..

[gn303]

I had tested (out of curiosity) my Walter 300 and my Hammerlï at the Vogel factory in Germany. The firm is rather close from where I live and I can testify that size makes sense. Was it worth the time? Yes! Do I shoot better with the adjusted size? Not at my level. I don't have the test group any more but a picture from a shop in Germany (www.keuchen.de) may give you an idea of the groups that can be achieved.

[FredB]

The problem with proving/disproving the proposition that pellet size makes a significant difference, is that it's already been shown that pellet lot makes a difference. Any two pellet batches of a different size will obviously be from different lots, so how do you know whether or not the size difference is what caused any significant results differences between the two batches?

I would guess that a huge size difference - e.g. 4.47 vrs 5.53 - could mean something practically, but I really doubt that the kind of .001-.002 difference cited here would matter much. I'm with Rover on this one, and more importantly with Don Nygord who told me not to worry about it.

FredB

[Rover]

Just to mess with your melons; no one has mentioned choked barrels.

[Richard H]

FredB, pellets are sorted to the sizes as opposed to being made to those exact sizes. So they put a roll of lead alloy wire into the machine and it will make 4.5, 4.49, 4.48, 4.51 ect. The pellets will then go through a gauge that sorts them by size. They will all have different lot numbers but in reality the different sizes could be made at the same time with the same parent material.

[FredB]

FredB, pellets are sorted to the sizes as opposed to being made to those exact sizes. So they put a roll of lead alloy wire into the machine and it will make 4.5, 4.49, 4.48, 4.51 ect. The pellets will then go through a gauge that sorts them by size. They will all have different lot numbers but in reality the different sizes could be made at the same time with the same parent material.

Richard,
I had forgotten that fact, but practically it doesn't change anything, as you would have no way of knowing if your 4.49 "lot XXXXXX" was in reality the same lot as your 4.50 "lot YYYYYY". I suppose if you could stand at the end of the production line and take a bunch of 4.49s and a bunch of 4.50s that were made at the same time, you could experiment meaningfully regarding size difference. Let us know how that turns out, OK?
;>), FredB

[gn303]

Prove it... with empirical data...

Look at http://www.pilkguns.com/mako.htm

Are these the data you would like to see Rover?
Just my 2 cents.

Regards.

[Rover]

I guess you didn't see this:

http://www.targettalk.org/viewtopic.php ... ellet+test

In my tests there was no apparent connection between accuracy and pellet diameter. Small diameter shot as well as large pellets. Mako's test was really no different than my own more stringent tests (but nicely done).

I have yet to see any test correlating pellet diameter specifically to accuracy. I don't think there IS a correlation, especially after my "choke" comment.

If there IS; show me!

[gn303]

Indeed Rover, I didn't see the results of your test. Thank you for drawing my attention to it. And the results are at least interesting. However they contradict what I have witnessed (at Vogel) or what I heard from Daryl Szarenki. At Vogel I've seen 10 shot groups the size of a penny compared to a one hole group just a little bigger than the pellet! But I will make you a promise: on a next visit to Vogel, I'llI collect all test cards and publish them on this forum. In a ISSF TV interview Daryl clearly states that you can get pellets at Wall Mart, BUT that the high level competition shooters test pellets to match them with their gun. You can suspect Daryl to be paid by H &N or Wal Mart, but I'm inclined to believe him. In an earlier mail I did agree that for a less than top shooter (eg. under 565! in AP) it won't matter what pellet grade he will use. On the contrary: he will better off spending his money on some more pellets than on the more expensive high grades.
Regards,
Guy