best locktime percussion locks?

[Terry D.]

I noticed that many of the flat-spring locks have a shorter distance to travel than the coil spring lock on my T/C rifle.

Does the hammer travel as fast with the flat springs? Which has the best lock time in general - flat or coil? Are there any particular locks that are standouts for locktime?

I have solved the first part of the accuracy equation for my rifle - adding a peep sight - but would like to upgrade the lock if it makes a significant difference.

 

[John Taylor]

The T/C lock needs the extra distance to accommodate the fly. Three thing will effect lock time, spring tension, distance and weight. If you can lighten the hammer and other parts and decreas the travle distance then the lock time will be faster. Another thing that helps is pollish all mating surfaces to lesson friction. Some people say using a set trigger increases the time.
Hope this helps

 

[RedFeather]

I've read that coil springs are slower than flat springs. The plus side is that they don't break as easily. Probably a lot easier to manufacture, too. Set triggers are slower than non-set, as they usually have to kick a lever to disengage the sear, which is an extra step. The benefit is that they are more sensitive, requiring less pull, and this offsets the additional lock time. Aside from the lock, I think the design of the bolster and breech contribute a lot to ignition speed.

RedFeather

 

[Terry D.]

Redfeather,

What are the standard designs of the bolster and breach? Of what type is the T/C rifle?

Thanks

 

[RedFeather]

First, I'm defintely no expert. There is something I believe is called the English patent breech in which the breech face, instead of being flat, is countersunk with the flash channel entering at the rear. This provides for a more consistent ingition and supposedly a increase in velocity. Perhaps due to a more complete or even powder burn. I don't know what T/C uses. Maybe someone here is familiar with their innards and can share the knowledge?

RedFeather

 

[John Taylor]

T/C uses a patent breach. Their cleaning jags have a step which is supposed to help clean it.