Purpose of heavier recoil spring? also ammo question


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Ukraine Train
January 8, 2004, 11:35 AM
I've noticed that a lot of people are getting 19# springs to replace the 17# factory ones in Makarovs but I haven't been able to find a complete explanation as to why. I think it has to do with the type of ammo you're shooting, which brings me to my next question. When a round is described as say, 115gr, that means the bullet weighs 115gr, correct? Does a round with a heavier bullet also have more powder? I noticed that the 115gr HPs I was shooting from my Mak had more recoil than the 95gr FMJs.

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clipse
January 8, 2004, 11:39 AM
When I had a PA-63 I replaced the recoil spring with a heavier one and it reduced the recoil snap tremendously. It went from being painful to being able to be shot all day long and be completely fine. FWIW.


clipse

m1911joe
January 8, 2004, 07:27 PM
UT you asked does a heavier bullet have more powder in it.

No for the same speed (feet per sec.) the heavier bullet will have less.
The lighter bullet can be pushed to higher speeds. But the heavier bullets
will have more recoil.

riverdog
January 8, 2004, 07:40 PM
Does a round with a heavier bullet also have more powder? No for the same speed (feet per sec.) the heavier bullet will have less. In general, lighter bullets go faster. If you want the heavier bullet to run at the same speed as the lighter bullet, you will need a different (heavier) powder charge, you will have a higher chamber pressure and may exceed the firearm's designed pressure spec.

I don't reload, but the lighter bullets can handle more powder without exceeding the pressure spec of the firearm.

Roadkill
January 8, 2004, 09:15 PM
When I started reloading the strange thing to me was that a heavier bullet used less powder than a light one. It also has to do with the type and speed that the powder burns, the slower the powder then the more pressure build up. The spring resistance on a gun deals with several factors such as the weight of the bullet, the speed with which it leaves the barrel, the weight of the slide, the amount of pressure or recoil pushing the slide to the rear, the required distance of travel of the slide which depends on the cartridge length, and the magazine spring strength and pressure required for the slide to strip another round out of the magazine and into the chamber and then for the bolt to lock. An Astra 400 has a magazine spring that would work on my Dodge truck, but the slide is very heavy and the 9mm Largo a long cartridge. The deal is to get a spring with enough resistance to lessen recoil but still allow the gun to function.

rk

BigG
January 9, 2004, 10:49 AM
Makarov is a blow back gun. They will have problems with too powerful ammunition. Someone is obviously trying to hot it up by putting a stiffer recoil spring in.

BeLikeTrey
January 9, 2004, 11:05 AM
Anyone, let me know where to get different springs ?

Ankeny
January 9, 2004, 11:12 AM
Wolff Gun Springs (http://www.gunsprings.com/)

BeLikeTrey
January 10, 2004, 08:37 AM
Thank you so much! I was really close to trying a hardware store ;)

mod12
January 10, 2004, 03:39 PM
i have 19# recoil springs and 10%+ mag springs in both my bulgarian and russian mak. i put them in to ensure against battering whan shooting european ammo. which can be pretty high pressure when compared to domestic ammo. they do reduce felt recoil noticeably. when shooting wolf russian ammo. 115 gr. solids the recoil can be described as sharp when compared to other ammo. i feel they are a marked improvement over the original springs. the mag. springs ensure that the next round gets up there. a wealth of info. is available at www.makarov.com great guns!:)

PCRCCW
January 10, 2004, 05:53 PM
The basic mechanics of replacing the OEM spring with a heavier unit is easy.

The heavier spring slows the recoil impulse speed of the slide..on the way back...thus hits the frame softer.

It however, increases the speed the other way over the OEM spring. This is hard on the barrel pin/slide stop when the slide stops "WHAM"...but it does increase the reliability of feeding.
The extra force is added when the rounds are being stripped from the mag and then into the chamber.

This is what I use in my CCW's and just consider it cheap insurance.

Shoot well.

JNewell
January 10, 2004, 09:09 PM
it does increase the reliability of feeding

Not sure that always works out that way. Sometimes the increase forward velocity returns the slide before the mag spring has raised the next cartridge sufficiently for the slide to strip the top round from the magazine. A solution to that is to use + power mag springs, of course...

BTW, where's the ice cream capital of the world???

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