Swop barrel on a HW breakbarrel

[Phil Russell]

This is interesting as the replies cover replacing the barrel / breech block as a unit. Whenever I see a 'barrel replacement' post I automatically think of just replacing the barrel proper i.e. the tube the pellet goes down, not including the breech block into which the barrel is fixed.
I must assume, therefore that if someone wished to swap calibre from, say, .177 to .22 on a break barrel the job would just entail swapping the barrel/breech block plus, most likely, an enlargement of the transfer port. Maybe an adjustment to the mainspring as well.
Cheers, Phil

[Murphy]

I must assume, therefore that if someone wished to swap calibre from, say, .177 to .22 on a break barrel the job would just entail swapping the barrel/breech block plus, most likely, an enlargement of the transfer port. Maybe an adjustment to the mainspring as well.
Cheers, Phil

Also removing and reattaching the cocking arm.

[Phil Russell]

Also removing and reattaching the cocking arm.

ah, yes ... I wondered where I had gone wrong!
Cheers, Phil

[Bladerunner too]

This is interesting as the replies cover replacing the barrel / breech block as a unit. Whenever I see a 'barrel replacement' post I automatically think of just replacing the barrel proper i.e. the tube the pellet goes down, not including the breech block into which the barrel is fixed.
I must assume, therefore that if someone wished to swap calibre from, say, .177 to .22 on a break barrel the job would just entail swapping the barrel/breech block plus, most likely, an enlargement of the transfer port. Maybe an adjustment to the mainspring as well.
Cheers, Phil

As the .22 is supposed to be more air efficient ,i would think one would not have to enlarge the transfer port (in either .177 to .22 or visa versa) but certainly an adjustment of the mainspring.

[Rapid7Nick]

This is interesting as the replies cover replacing the barrel / breech block as a unit. Whenever I see a 'barrel replacement' post I automatically think of just replacing the barrel proper i.e. the tube the pellet goes down, not including the breech block into which the barrel is fixed.
I must assume, therefore that if someone wished to swap calibre from, say, .177 to .22 on a break barrel the job would just entail swapping the barrel/breech block plus, most likely, an enlargement of the transfer port. Maybe an adjustment to the mainspring as well.
Cheers, Phil

I wouldn't even touch the transfer port.
Mainsprings are the same for whichever calibre air rifle. Well it is with these German springers, 9 times out of 10 changing barrels shouldn't put the rifle over the limit.