BSA R-10 question

Hello Kingston73,



The gun does not come standard with a fill port dust plug! However you can purchase one from ebay/online. Do a google search and you will find many. For me, I had and extra brass factory fill probe available and so I cut it down and drilled a hole (opposite to the two o-rings) so I can add a key ring to it. I use that as my dust cover. Ill have to find it and take a picture of it.

 I purchase the BSA r10 SE earlier this year and it did come with a fill port protector which I thought was a nice design with the O-rings that allowed it fit snug. It was a very nice rifle until the bottle blew off of it taking the bottle nut with it ... ripping the brass collar out of the gun. Appeared to be a brass casting issue . Gamo has it now repairing it.

And I did purchase mine from Pyramyd Air as well.

Mine did not come with a dust plug either (just got mine 2weeks ago from PA). I ordered one from XTX plus some o-rings, etc. I have heard other say they use and ear plug. You can do that for a while until you find a proper plug. I will say this is the first probe gun I own. I am not too big on the probe. I like the normal foster fitting. It hisses and squeals but as it get going it quiets down and fills the rifle up. From what I read that is normal and the probe doesn't seal off until it gets under pressure.

Mine came with the dust port cover 

I replaced mine with an Air Arms gauge a while back. I run a RAW CF bottle when I take the rifle out of town, and the AA gauge lets me see the 250bar mark.

I not sure on your first question. It seems if it leaks it leaks. Maybe the bottle was loose? On the the second question I turned my rifle down from around 960 fps (got a little more than 40 shots) to 910 fps and got a little over 70 shots. In both instances I was filled to around 210-215 bar as that is all the air I had in my tank at the time. So you could probably say 50 shots and 80 shots if the rifle had been filled to 232 Bar. Without a chrono I am not sure how you would really ever know. You may just back off one turn on the hammer spring and call it good until you can shoot it over a chrono. I hear what you are saying on the gauge. XTX Air has a nice one that is easy to read. I was going to order one but got used the the factory gauge so I kept it.

Shoot into a 2x4 for the depth of your pellet then adjust your gun check your depth again the less your pellet depth is the lower your FPS is. When it bounces of the board you went too low .

I did replace the reg with a Huma but the factory reg was working. I just had some extra cash so I bought one. I seemed to get around the same shot count with both. I don’t remember how much I backed the hammer spring screw off to get from 960 to 910. At least one turn but I don’t think more than 2. I was just shooting through the chrono, adjusting back and forth, and wasn’t keeping track. I was just trying to get it from 21fpe down to below 20fpe in the event I decided to use it in an FT match. The second benefit was shot count. Backing off the hammer spring helped on both counts and made the rifle more quiet. I was using JSB Heavies (10.34gr) for a point of reference on the velocities I was achieving.