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Old 09-04-2010, 04:25 PM
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ColColt ColColt is offline
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Default Recoil Spring for +P

I've been wondering if a 16# recoil spring would be better than the factory 14# for 230 gr +P ammo such as Ranger T's. This is primarily for the 4506 and 4566TSW. I've shot them with the standard factory spring and there seems to be no problem but wasn't sure if a slightly heavier spring might do better...opinions?
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Old 09-04-2010, 06:20 PM
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Originally Posted by ColColt View Post
I've been wondering if a 16# recoil spring would be better than the factory 14# for 230 gr +P ammo such as Ranger T's. This is primarily for the 4506 and 4566TSW. I've shot them with the standard factory spring and there seems to be no problem but wasn't sure if a slightly heavier spring might do better...opinions?
After having previously discussed this issue with the factory, regarding 4566TSW's, I decided to continue to use the stock spring. (We had to use the RA45TP +P for a while, too, when the standard pressure loads weren't available or being shipped at one point.) It might require spring replacement sooner, of course, depending on what's observed during periodic inspection and during range sessions. A number of shooters realized a difference in felt recoil between the standard pressure and +P T-series loads. Some more than others.

I'd definitely replace the springs sooner in the alloy 4513TSW, or a 4563TSW, I suppose, but I do that anyway.

Just my thoughts. The 4506/66's were supposedly built around using a full power 230gr bullet weight, you know. The factory offers a reduced power "wadcutter" recoil spring for the 4506's for lower powered target loads.

If you can afford to buy & shoot a few thousand rounds of RA45TP, you can probably easily afford a new stock recoil spring every few cases or so.

They're your guns, though. Call and ask one of the techs at S&W about it.

I'd also consider that not all .45 +P ammunition may be alike. I'd stick to using something made by one of the major American ammo companies who have acquired experience in making a lot of ammunition for LE/Gov users.
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Last edited by Fastbolt; 09-04-2010 at 06:33 PM.
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Old 09-04-2010, 07:18 PM
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If you can afford to buy & shoot a few thousand rounds of RA45TP, you can probably easily afford a new stock recoil spring every few cases or so.
Ain't that the truth! My 4506 has had it's share of CorBon's 200 gr Speer +P(the old style) and I never changed the standard weight spring. I haven't shot enough in the 4566TSW to see if it would be as reliable with the stock spring for it, however.


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I'd also consider that not all .45 +P ammunition may be alike. I'd stick to using something made by one of the major American ammo companies who have acquired experience in making a lot of ammunition for LE/Gov users.
Since my favorite round(CorBon's 200 gr Speer bullet in +P) isn't available anymore and I'm jealously guarding what I have left, I went to the standard Ranger T and currently trying some of the same in +P and wasn't sure if I should just change out the spring or not. I have a 16# but recently put the 14# in. I ordered the extra power 16# from S&W when I got the standard...in fact I bough five of each.
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