Those running 9mm, do you run 115-124-147 grain ammo?

I have often overheard the ipsc guys talking about swapping recoil springs in their shadows
I wonder if this will even be an option on my 92
 
Commandes plusieurs ressorts chez wolff springs. Tu vas pouvoir effectuer des tests et décider au niveau du feeling quel ressort te convient le mieux. À part le feeling, je ne vois pas en quoi changer pour un ressort plus faible sera bénéfique, surtout si tu penses rester avec de la munition commerciale. Le 92FS n'a pas de fenêtre d'éjection, c'est la glissière qui recule et laisse énormément d'espace pour que la douille soit éjectée sans encombrement. Un ressort plus faible gardera ta glissière ouverte plus longtemps, ne changera rien au niveau de la fiabilité mais tu devras remplacer ton ressort plus souvent afin d'éviter une usure prématurée des composantes de ton arme. On s'entend, si tu penses tirer des milliers de balles par année, je te recommande de remplacer ton ressort à tout les 5,000 balles.
 
I have a Shadow with an 11# mainspring and I was alwayS told to shoot 147 or 124's. I am no expert and really quite green compared to many around here, but this summer I bought 1000 of these 115 gr reloads and holy mother did my accuracy improve. I then tried some Federal 115's and they performed the same. I am convinced that my gun likes the 115's better.
 
As with any gun I own, I pick what generally shoots most accurately for me. I do have a soft spot for the 124gr, only because I read somewhere that 124gr@1200fps was the original design criteria for the round in 1901-1902.
 
So far from all the different seen answers it's a case by case preference. I will just have to make my own opinion

J'ai deja 5 springs en chemin d'Italie, j'ai commander pour 200$ de pieces. Locking block, pin, hammer, tout les springs, etc...
Au moin ca me fait un coffre de maintenance sur la go, j'avais aussi entendu parler de changer le recoil spring a 5000. Je suis a pres de 7000, donc j'ai hate que mon kit de spring arrive.
 
I have used both the 124's and 147's.

I really have a hard time telling the diiference when they are loaded to the same PF.

What confuses me is the whole 'for every action there is an equal and opposite reaction' thing ???

If you have 2 loads pushing bullets out the barrel, of the same gun, at a given PF shouldn't the recoil be the same for both loads?

John
 
John in B.C. said:
I have used both the 124's and 147's.

I really have a hard time telling the diiference when they are loaded to the same PF.

What confuses me is the whole 'for every action there is an equal and opposite reaction' thing ???

If you have 2 loads pushing bullets out the barrel, of the same gun, at a given PF shouldn't the recoil be the same for both loads?

John
Click to expand...
nope, think about the equation for kinetic energy (which is recoil)

Ek=1/2(m)(v^2)

velocity is squared and therefore a higher velocity will have more effect on the amount of energy than the weight of the bullet. try it with a few loads, 147gr has less energy than 124gr
 
Yea all that matters, but we were talking same gun and same powder just different bullet weight at the sane pf. Its close enough that it illustrates the point anyways
 
Close enough ... fair enough ... my microbiology degree has made close enough not close enough ... :)

As they say, close only counts in horseshoes and hand grenades!

Question then: If the bullet has a different mass, should you not be using a different mass of powder?
 
well obviously its all if you compare it in the same gun, saying my 1911 recoils less with 124gr @ 130pf than my m&p with 147gr @ 130pf is not really a valid comparison of 124gr and 147gr loads.

if you are using the same powder, yes you use less powder. The amount of powder you use also relates to the recoil (less powder = less gas) but the fact that you use less powder is a condition of comparing both loads at the same power factor (which are fixed based on the rules) and means that any reduction in recoil is part of using a 147gr bullet.
 
For me, 130 pf 147 grain bullet has less recoil than 124 grain bullet at same pf. I have tested this in CZ , Glock, Tanfo, and Jericho. Your mileage may vary.
 
A few years ago an Italian shooting magazine ran a test of 9mm loads of equal PF with 124's and 147's in the same gun. They found that 147's generated around 5% less recoil theoretically and in their measurements. Lots of graphs and explanations, although it's all in Italian.

www.armiestrumenti.com/blog/2009/10/21/tiro-dinamico-palla-leggera-o-palla-pesante/

Is 5% 'worth it'? Hard to say, I normally shoot 147's but my best match so far was shooting 124grain BDX match ammo.
 
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raks said:
A few years ago an Italian shooting magazine ran a test of 9mm loads of equal PF with 124's and 147's in the same gun. IIRC they found that 147's generated around 5% less recoil in their measurements. It was fairly scientific with pressure sensors, high speed cameras etc...

www.armiestrumenti.com/blog/2009/10/21/tiro-dinamico-palla-leggera-o-palla-pesante/

Is 5% 'worth it'? Hard to say, I normally shoot 147's but my best match so far was shooting 124grain BDX match ammo.
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5%??

That sounds about right to me.

John
 
snipersyn said:
wow,that's pretty light.
i'm using #13 right now with my 135gr loads.
i am going to load up some 147gr loads tonight and i figure i'll stick in a #11 for this weight to compensate for the heavier bullet.
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forget the theory part, just setup a cam and watch yourself shoot with the 11#, if the gun wants to nose dive after a shot; your spring is too heavy. try 9# next if you need to go down.

just to be absolutely clear, on a trojan with handloads in 130pf range (or Remington UMC 115grs) and your grip being correct (push+pull), the slide should only move backwards with the gun remaining completely stable (no jerk up or down). if your gun moves up, its mostly likely your grip/stance, and or if it dips, thats more than likely your recoil spring (too heavy).

only caveat is with reduced recoil spring strength you have to keep the gun well lubed (dripping wet) but not worry, on the first shot the pistol will get rid of any lube it doesn't need/want :)
 
mshundal said:
forget the theory part, just setup a cam and watch yourself shoot with the 11#, if the gun wants to nose dive after a shot; your spring is too heavy. try 9# next if you need to go down.

just to be absolutely clear, on a trojan with handloads in 130pf range (or Remington UMC 115grs) and your grip being correct (push+pull), the slide should only move backwards with the gun remaining completely stable (no jerk up or down). if your gun moves up, its mostly likely your grip/stance, and or if it dips, thats more than likely your recoil spring (too heavy).

only caveat is with reduced recoil spring strength you have to keep the gun well lubed (dripping wet) but not worry, on the first shot the pistol will get rid of any lube it doesn't need/want :)
Click to expand...

Awesome!
thanks for the tips. I will definitely try them. :)
 
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