Good day;
I have a 48 that recently blew out the breach seal.
When the rifle started to exhibit symptoms of decreasing power then pellets not being pushed from barrel on first shot while using Supermag 9.3 (all within one half hour), I tried Premier Ultra Mags 10.5 and the rifle would shoot. It also shot with Club 7.0 used with another rifle, however weakly. Go back to the 9.3's and - nothing.
I have learned (on the web) that the 10.5 would shoot because the resistance of the greater weight caused the seal to seat (temporarily) better than the 9.3. This is a reasonable answer.
My question is this. Once returned from Charlie, strictly from a standpoint of longevity of the seal, which would be better for primary use; the 10.5 or the 9.3?
On one hand, the 10.5 keeps it seated. On the other, the 9.3 would have less back pressure on the seal.
One thing for sure. With the 48 and a CO2 I have, pellet weight differences, however small, have huge performance variations.
10.5 or 9.3?
Regards;
Mike
I haven't seen a problem with the breech seal on US import Diana sidelever guns, so any pellet that fits the bore properly and gives a decent firing cycle should be OK. If your gun exhibits harsh firing with a certain pellet type, it's a bad match for the gun and I wouldn't use it.
Maybe your breech seal was about to go anyway, and you finally pushed it over the line. However, I can't speak to the 12 FPE guns with their different breech seal arrangement.
(due to my firsthand experience last month) that it may not be the breech seal. They're almost impossible to blow. The piston seal will melt and cause the symptoms you describe. My 48 did it shooting Trophys after I thought it was broken in from shooting three tins of Kodiak Match. An E- to Macarri got me a new Tesla seal and I gleaned the knowledge needed to replace the seal myself through this very forum. BTW; the two dummy pins can be made out of 3/16 by 1 1/4 metal dowel pins and two people can use the edge of a table for dis/re-assembly