caplock mainspring tension

[herath]

Building a TN rifle that has stock inlet for large Siler lock.This lock has heavy mainspring tension.Does anyone lighten this mainspring to decrease the impact on the bolster or is this impact force acceptable . If you lighten this mainspring, what is the proceure for lightening the mainspring?

[Dphariss]

Building a TN rifle that has stock inlet for large Siler lock.This lock has heavy mainspring tension.Does anyone lighten this mainspring to decrease the impact on the bolster or is this impact force acceptable . If you lighten this mainspring, what is the proceure for lightening the mainspring?

Cap guns are supposed to have a lot of pressure on the nipple. It seals the breech.
If its drum and nipple gun and this worries you then put a patent breech on the gun.
Dan

[Jim Chambers]

Take a look at the article in this month's issue of Muzzle Blasts magazine about percussion locks by Fred Stutzenburger.....makes a lot of sense.  When I get a little more time I will try to modify our percussion hammers to  conform more closely to the one done by Fred.  You don't need to lighten the mainspring, just modify the hammer.

[herath]

Still waiting on Muzzle Blasts,looking foward to seeing it.In conclusion,with a well supported bolster and good hammer design I should not worry about bolster failure due to fatigue within normal expectations,right?