cocking problem

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Originally Posted by Edward Tinker

here is an example - I traded for about 8 breechblocks and got 2 firing pins with them (I have others), but the point is, that without modification, one of the firing pins would slip in easily in about a quarter (so 2) and another 2 or 3 would go in and out but with 'drag' and at least two, wouldn't work at all - and these are ALL original breechblocks.

that amazes me how were they able to produce so many if most needed a bunch of hand fitting the time and labour