Dan Wesson Razorback doing great now!

[Intercooler]

    Put a bunch down range with it today with the new Pearce grip. It has made the gun, just like the Hogue made the Match. It just mows through the ammo now and is quickly becoming my favorite. In accuracy it may be just a smidge more accurate than the Match but it's splitting hairs. Only other change I'm considering is a flat wire spring or heavier Wolff spring.

[sqlbullet]

I assume you already have the FBFPS and a heavier mainspring?  I am going to back off the recoil spring in my Para when it's service cycle comes to and end.  I have a 24 lb in there now.  Going to back off to a 20 lb, but up the mainspring from 25 to 28.

I want to try to get to where the slide velocity is governed by the unlock resistance, and the recoil spring really is just to run the action.

[Intercooler]

       I ordered a FB from EGW and they sent a 80 series. The FB in the Razor is a 70 series, so I sent it back. Didn't matter because when I removed the stock one it is basically a flat bottom stop. Haven't changed anything so far and it shoots awesome! Actually I'm going here in about 45 minutes to put some more through it.


     I plan on changing the recoil spring to a 22lb in flat wire if I can find one. What would changing the main spring do for it? I don't even know what the stock rating on that is.

[sqlbullet]

Increasing the mainspring slows down the unlock of the action and dumps slide momentum.  It can have a slight effect on trigger pull, though reports by those who have measured are that on sear/hammer's with proper geometry the increase is usually less than 1/4 lb.

Stock on a 1911 generally is 23.  I currently am running a 25, and have heard reported that 1911's with titanium firing pins, like the SR1911 have 28's.  That is where I am going next.

The general idea is that a heavy recoil spring will hammer the lugs when the slide returns to battery, and does less to slow down unlock since the springs stacks as it compresses.  The FB FPS + a heavy mainspring will slow unlock and dump slide momentum very early in the cycle, and do not release this energy as the slide returns to battery.  The heavy mainspring will increase positive ignition but may have a (reportedly slight) increase in trigger pull on a 1911. 

Heavier mainsprings will increase trigger pull significantly in double action firearms since the trigger is compressing the spring.

[Intercooler]

Would that help a Witness as well? It ran so great today I hate to change anything on it other than a little stiffer spring. Even then it is running perfect with all ammos and doesn't seem to be battering.

[sqlbullet]

Running good with no evidence of battering, I wouldn't mess with it.

[Intercooler]

Wonder where the tell-tale signs of hard hits show in a 1911?

[sqlbullet]

Pretty much the same as the Witness.  In the frame where to recoil rod seats.  If your recoil spring is too heavy the slide stop pin, lower barrel lugs and slide stop pin hole in the frame.

[Intercooler]

Have to check those areas every so often. Did you see the Henning cone rod for the Witness? That's a nice upgrade!

[sqlbullet]

Yeah.  i was drooling on those when I saw yours.

[Intercooler]

The stock piece moves a bunch and for sure doesn't have the contact area. It makes it near what the Hunter has.

[Buddy10mm]

I assume you already have the FBFPS and a heavier mainspring?  I am going to back off the recoil spring in my Para when it's service cycle comes to and end.  I have a 24 lb in there now.  Going to back off to a 20 lb, but up the mainspring from 25 to 28.

I want to try to get to where the slide velocity is governed by the unlock resistance, and the recoil spring really is just to run the action.

I ordered a FBFPS from Wilson for my Razorback... but have not put it in yet.  Had not thought about the mainspring.  Only about 1/4 of my loads are "full power" 10mm loads.  The rest are "FBI" loads.  Would the mainspring increase help in my situation?

[nickE10mm]

Intercooller,

I think the S80 FBFPS's are okay in a S70... Just not the other way around

[Intercooler]

Won't fit. BTDT

[sqlbullet]

I ordered a FBFPS from Wilson for my Razorback... but have not put it in yet.  Had not thought about the mainspring.  Only about 1/4 of my loads are "full power" 10mm loads.  The rest are "FBI" loads.  Would the mainspring increase help in my situation?

A FBFPS + a 25 lbs mainspring will yield the same damage to a shok-buff in 25 rounds fired with no recoil spring as 45 acp 230 ball ammo does.  The is based on testing done by Ned Christensen of Michiguns.

I think this should be the factory set up for 10mm guns.  Clearly the factories don't agree with me for whatever reason.