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Discussion Starter #1
My DVC P arrives at my FFL today, and it had been mentioned that I may need a lighter spring if I wanted to shoot 115g ammo due to the comp. can anyone confirm? And if so, what spring do I need so I can order it (I just have thousands of rounds of 115g plinking ammo and if needed will start buying heavier ammo)

Thanks


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Go to Wolff (Gunsprings.com) and buy a small assortment of recoil springs for your gun. With a little experimentation you will find which one you need for a specific load. If your recoil spring is too strong it can close the slide faster than the magazine spring can push the next round up in position.
 

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Keep in mind that this is on a 4.15” slide and recoil assembly. You’ll probably need something closer to 9-10lb spring.

The chart on Brazos’ site is for a 5” gun.
 

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Agree.
Take the radical step of shooting the gun before you start tinkering with it.
Maybe "break in" with some NATO spec before going to the cheap stuff.
 

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Discussion Starter #9
Mine shoots 115 grain weak Winchester white box with no problems with the stock recoil spring.


Thanks for the info. I had just been told it may have issues with light ammo due to the comp


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Mine shoots factory ammo with no issues with the factory spring. The factory spring is only an 8lb spring. I've shoot Fiocchi 115g FMJ, Winchester WB 115g, Ranger 124g +p, Ranger 147g +p and Ranger 127g +p+.
 

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BTW, almost all of my range ammo is 115gr. I haven’t had any problems in either of my Costa Carry Comps or any of my other comped STI’s.
 

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Discussion Starter #13
Good to know. I didn’t think originally that I would, but the STI guy on the live feed said I had to watch the ammo because of the comp and that’s what made me wonder.

Sadly, the USPS is playing hide and go seek with it at the moment. Seems there was a lazy guy on Black Friday who said my buddy wasn’t at his shop for it to transfer and they sent it back. Arrived back to Shooting Surplus yesterday and they sent it right back out. Now it says Sat arrival so we will see


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My DVC P arrives at my FFL today, and it had been mentioned that I may need a lighter spring if I wanted to shoot 115g ammo due to the comp. can anyone confirm? And if so, what spring do I need so I can order it (I just have thousands of rounds of 115g plinking ammo and if needed will start buying heavier ammo)

Thanks


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Why not try some American Eagle 147g AE9FP? It's running 147PF and is super accurate in the STI 4.15" barrels!

;)
 

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I've had my DVC-P since the end of November and have had some issues in this area. The first week I put about 800 rounds through it mostly Magtech 115. After about 3-400 I started getting failure to return to battery, failure to lock open, then double feeds and stove pipes. I sent it back and they returned it about 8 days later good service. The STI gunsmith said he put in an 8 pound spring (he said the 8,9,10 look the same and sometimes get switched) then oiled the hell out of it. I should note when I initially got it before using I cleaned and oiled it. When I got it back I used Blaser Brass 124 for a little more recoil. I made it through a USPSA match and about 8-900 rounds before I started getting the same issues starting with failure to lock open. The STI GS had said to clean after about 5-600 rounds. So I had it deep cleaned (Ultrasonic) and well oiled. I put 200 rounds through today no issues. Here is what I'm looking at going forward. Blaser Brass fires a little dirty, I'll be switching to a cleaner 124 grain. I'm putting a little oil on the rails after use (150-250 rounds for me generally). Options I'm looking at going forward. T1 ammo is local and may be able to make a clean 124 with a slightly increased charge. Also I may look at a 7 1/2 lb spring.
 

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Discussion Starter #16
I've had my DVC-P since the end of November and have had some issues in this area. The first week I put about 800 rounds through it mostly Magtech 115. After about 3-400 I started getting failure to return to battery, failure to lock open, then double feeds and stove pipes. I sent it back and they returned it about 8 days later good service. The STI gunsmith said he put in an 8 pound spring (he said the 8,9,10 look the same and sometimes get switched) then oiled the hell out of it. I should note when I initially got it before using I cleaned and oiled it. When I got it back I used Blaser Brass 124 for a little more recoil. I made it through a USPSA match and about 8-900 rounds before I started getting the same issues starting with failure to lock open. The STI GS had said to clean after about 5-600 rounds. So I had it deep cleaned (Ultrasonic) and well oiled. I put 200 rounds through today no issues. Here is what I'm looking at going forward. Blaser Brass fires a little dirty, I'll be switching to a cleaner 124 grain. I'm putting a little oil on the rails after use (150-250 rounds for me generally). Options I'm looking at going forward. T1 ammo is local and may be able to make a clean 124 with a slightly increased charge. Also I may look at a 7 1/2 lb spring.


Thanks for the response, I was finally able to pick mine up today but won’t be able to shoot until Sunday. I have a few hundred rounds to put through it and my staccato P.

I’ll make sure I break it down, clean and oil it up before shooting


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I bought the dawson tool less recoil guide and used and 8 pound recoil spring in my STI Carry Comp which allowed 115 blazer to function flawlessly. Have to admit, I switched to 124 ball and never looked back and kept the 8 pound spring installed,
 

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I bought the dawson tool less recoil guide and used and 8 pound recoil spring in my STI Carry Comp which allowed 115 blazer to function flawlessly. Have to admit, I switched to 124 ball and never looked back and kept the 8 pound spring installed,
The new DVC-P's come with a tool less recoil guide (I assume its Dawson) as well as the new grip, which I like alot. I put another 200 rounds through it today no issues.
 
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