Just wondering if you have any evidence of oval pistons
Here is a pic of a out of the box Diana piston and it looks round to me, the guide is precision made so that is round and look how central the piston rod is
https://imgur.com/fG5JH0E
Far too many rifles to list now, all mainly British but the odd pesky foreigner has snuck in
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Done my bit for the BBS: http://www.airgunbbs.com/showthread....-being-a-mod- now Im a game-keeper turned poacher.
Absolutely I have Barry.
Both the 280 I have here and the 52 I sold recently were oval where the fitting for the piston seal was pressed on. I dont think this is any secret. Tony Leach also reported this on his airguntech blog for his 280 tune. It can be dressed off to round but its bloody hard stuff.
On your pic, its where the crimps are. Both mine were very out of round. Have you read that blog of Tony's ?
B.A.S.C. member
The 280 you talk of is the rifle I bought off of Tony a few years ago, the link to the piston problem is below.
http://www.airguntech.com/?p=214
I also did the same with the T06 piston I received in my T06 conversion kit that is fitted to my early 34.
Pete
Far too many rifles to list now, all mainly British but the odd pesky foreigner has snuck in
It would be an air arms if they did one
I was edging towards the Walther as I've never had one really and almost bought an LGV, second hand a few months ago at my local club.
I did once try the early model in .177 at the Midland just before they were released courtsey of Terry D and was very impressed with how it performed !
I forget the name of the rifle, it was the one without the cocking aid/false moddy and had open sights ?
An airgun or two
I have not owned a 280 so I can't comment with any experence.
My 34 is a T01 Have a look at the different pistons
https://imgur.com/MiwqeRR
Far too many rifles to list now, all mainly British but the odd pesky foreigner has snuck in