BSA R10 Transfer port

No telling with used . Like the giy could of use one like from ebay uk thats custom sized.

Sizes from 1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5 mm. https://www.ebay.co.uk/itm/174435897577

seemed like fac was like 4mm and uk low power like 2mm


Here 5mm
https://www.airgunspares.com/167679-bsa-transfer-port-r-10-fac.html

And a 4 as well. Seems between what r10 or fac/nonfac or if .177 to .25 12j/24j looks up in the air..

Funny the ones that look smaller ported (r10se ones) no size given..

The list of em

 
No telling with used . Like the giy could of use one like from ebay uk thats custom sized.

Sizes from 1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5 mm. https://www.ebay.co.uk/itm/174435897577

seemed like fac was like 4mm and uk low power like 2mm


Here 5mm
https://www.airgunspares.com/167679-bsa-transfer-port-r-10-fac.html

And a 4 as well. Seems between what r10 or fac/nonfac or if .177 to .25 12j/24j looks up in the air..

Funny the ones that look smaller ported (r10se ones) no size given..

The list of em

 
Well 920+/- fepending on the gun setting and pellet used sounds like 915 is ball park. Then used you just dont know what the last guy did in any adjustments.

https://hardairmagazine.com/reviews/bsa-r-10-se-air-rifle-test-review-22-caliber/

I had a forum friend here who had a r10 but aint seen him around in a couple of years..

I guess you used the search here and looked for somthing extra?

yup.. .. I think he was trying to reach 2500 fps with a carbon fiber bottle and the higher preasure..
 
Regulated ( R10 ) and thus operating at lower pressure ... larger transfer path is what you want. 4mm is ideal for a .22 cal
Thanks.. I the one I baught has a 5 mm in it already.. its .177 cal. The guy scratched up the Delrin Pellet probe bearing and a couple other parts.. Im in the process of doing the tune on it.. and looking for specs and details.. .. I have a full maching shop here so the work isnt aproblem... The other question I have is why doesnt this gun have a banjo bolt instead of the threaded pellet probe and a small sleave and screw? Where can I order another pellet probe out of stainless and If I trim the stock hammer spring down to the 32mm will that work or is the modified spring a different thinckness and thus the Force Vs Deflection would be diffent.?
 
Well im out of my league here but here they say if old style you have to upgrade to new style that uses the banjo.. maybe you got the old ?


Them folks got a decent parts listing for the r10's .
Have you ordered from them and how long does it take to get the parts states side? Also are the new ones from AOA have the upgraded banjo bolt or are they the old style?