Breech Bling
I’m told they just look good so I haven’t even fitted to my gun. They do look nice though… Might have to try it sometime.
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I am unsure what is meant by hammer slop or what happens when hammer slop is experienced? What causes this condition?
When referring to hammer slop, is that the tendency for the hammer zig-zag and bounce down it’s path of travel before it contacts the breech or “air bridge,”?
Basically you have a outter frame guided hammer like stock airforce or you have barrel riding hammer like most after market.
Barrel riding isnt always best because it can cause vibration along the barrel or can cause laterral side load up of force exherted against the barrel as the sear locks up the pressure of the spring while it holds the hammer. Once the sear releases when you fire the trigger, everything is unsprung quite abruptly and the breech end of the barrel becomes unspung like a diving board.
Is this bad geometry what you mean is occuring with your hammer slop condition.
I believe it to be a condition not fully understood or fully addressed in the mod community. Likely a problem with the fire control design and more noticeable in the 2013 trigger group. Very likely the reason that most modded and tuned guns require some massage and hand fitting of components and never work out to be a simple off the shelf aftermarket solution.
Pretty much like most things high performance.
Interesting. I’ve recently had to put a stiff spring in to fully open the valve and I have seen a gain in accuracy. I put it down to my new talon hammer, but perhaps the stiff spring has reduced hammer slop? As they say, never do two things at once..
Having your breech close securely against the valve should help align everything and provide an even transfer of energy to the valve. Of course there could still be slop in the hammer…
GsT
Well said
The breech is loose fitting or should I say does not fit the frame tube with anything like precision so at how much imbalance would there be a significant detriment to hammer breech valve movement or bounce ❓
I believe that to be a very valid point. In my opinion, this would indeed be a decline in consistiency. The extent of decline proportional to how extreme you set up your rifle. Just plinking or hunting with pellets with standard fill pressures and tame valvings not as big a factor. When shooting a radically opened up valve at higher pressures with bullets running everything at the top of the envelope…… Well,,, probably not so good!
Alot of aftermarket parts sure look cool, and some prolly work good for a specific purpose, but you really gotta look at the bigger picture and how just one component will interact together with everything else. Alot of benign little things can easily be overlooked and have affect in some of the least likely places.
When you add more weight (mass) to the breech knob the hammer is stricking the total breech mass more off center. Does that skew the breech slightly causing an angled strike against the top hat ❓
The breech is loose fitting or should I say does not fit the frame tube with anything like precision so at how much imbalance would there be a significant detriment to hammer breech valve movement or bounce ❓
I love physics lectures
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how they gonna increase intertia? i thought only moving parts would? thanks
ed
Everything has inertia – that’s the old “a body in motion tends to remain in motion, and a body at rest, tends to remain at rest.” In this case the (extra) inertia comes from the breech being heavier – when the hammer hits it, it’s not going to accelerate as quickly into the top hat as a lighter breech would.
GsT
yup just like a heavier pellet has more energy at impact, heavier breech is going to hit the valve with more energy cause the valve to be open
Except that they’re both being hit just as hard – the heavier breech is going to slow the momentum of the hammer and hit the valve with _less_ energy (all the energy comes from the hammer spring – the breech can only reduce energy in the system. A heavier pellet has more energy at impact (generally) because energy is a function of mass * velocity^2 – which means that as velocity falls, energy falls, but the mass remains constant so a lighter projectile sheds energy very quickly, while a heavier pellet keeps its numbers up better.
Well I can settle this one guys by chrono testing back to back the standard delrin breech which is in the gun versus the brass breech. At the moment the gun is shooting nice and accurate so I don’t want to strip it. I have heard that the delrin comes out best but no harm getting that confirmed.
how they gonna increase intertia? i thought only moving parts would? thanks
ed
Everything has inertia – that’s the old “a body in motion tends to remain in motion, and a body at rest, tends to remain at rest.” In this case the (extra) inertia comes from the breech being heavier – when the hammer hits it, it’s not going to accelerate as quickly into the top hat as a lighter breech would.
GsT
yup just like a heavier pellet has more energy at impact, heavier breech is going to hit the valve with more energy cause the valve to be open
how they gonna increase intertia? i thought only moving parts would? thanks
ed
Everything has inertia – that’s the old “a body in motion tends to remain in motion, and a body at rest, tends to remain at rest.” In this case the (extra) inertia comes from the breech being heavier – when the hammer hits it, it’s not going to accelerate as quickly into the top hat as a lighter breech would.
GsT
Hi GeneT
how they gonna increase intertia? i thought only moving parts would? thanks
ed
Yeah that’s what I hear. But the claim is that they do reduce the sound a little…
Well it’s going to increase breech inertia, so if nothing else, you’ll probably have to crank up your hammer spring and/or adjust your tophat.
GsT
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Very interesting intelligent comments. There is a high knowledge base on this forum that’s for sure.