Advice needed please.
I have a BSA Mercury Challenger & a Mercury S
The Mercury S is like new and probably not been fired in over 30 years.
Both are in .22" and look like they share the same breech seal.
My question is what is the best seal to use from the following:
1, Standard BSA
2, T.R.Robb heavy duty
3, Weihrauch (I'm sure I read somwhere that these can be used & that Venom used to use them but not sure)
4, any other recommended?
Your thoughts please..
Thank you,
Pete.