Smith and Wesson 627 PC Accuracy Issues

[riverrat38]

Unless there are chips or scratches, I think that what we are looking at is what we get with a barrel that has the cross sectional shape of a stop sign intersects with a muzzle crown.
Any attempts to polish it up to look like the "old" barrel sections would harm accuracy.
Symmetry counts a lot here.

Best,
Rick

 

[Bushmasterguy]

Thanks Rick. Appreciate your thoughts

 

[Bushmasterguy]

Accuracy Issue Resolved. I did go ahead and Polish the Crown Myself with the Brownells Brass Lap. 6 rounds at 15 yards with 5 almost touching! I am happy. See photo.

 

[BLUEDOT37]

Flash to Pass

Good to hear! Sometimes you just have to take the horse by the reins yourself. . .

. . .

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I bought a 627PC 5"bbl. 8-Times a few weeks ago & the forcing cone was sorely lacking. Circular grooves in it that ended abruptly at the rifling with turned up edges, and, from what I've read, cut too wide. I used the Brownells Revolver Chamfering Tool Kit I bought last year, for another project, to clean it up. Can't fix the "too wide" but now, at least, it has a nice transition to it.

By the way, those kits come with one each brass pilots for 38, 41, 44, & 45 calibers. I bought an additional second pilot for each & I'm glad I did. By putting one near the forcing cone & the other near the muzzle you have a perfectly aligned rod & don't have to concerned about trying to hold the center guide at the muzzle while cutting.

http://www.brownells.com/gunsmith-t...lete-38-45-kit-sku080-481-000-26157-2197.aspx

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[Bushmasterguy]

I can't agree more Bluedot! As is the case in many things in life.

I used the Brass Lap that you can use with a Power Drill. Following the directions carefully is the key not to overdue it. My crown came out smooth and perfect. I just wished S&W would have spent the extra time to do this when I sent it back in.

http://www.brownells.com/gunsmith-t...custom-brass-muzzle-crowning-lap-prod855.aspx

See Photo of Crown Polish/Lapping

 

[Frank237]

What a sad story regarding QC at S&W. Especially as a performance Center product!

I have stayed away from the modern revolvers but couldn't resist the PC 627x8 in 5". Mine is an older gun and has been accurate and worthy of the PC Logo.

Glad the OP's issues were resolved.

 

[05CarbonDRZ]

What a sad story regarding QC at S&W. Especially as a performance Center product!

I have stayed away from the modern revolvers but couldn't resist the PC 627x8 in 5". Mine is an older gun and has been accurate and worthy of the PC Logo.

Glad the OP's issues were resolved.

I agree,I have read similar stories far to often on this Forum.The really sad part is that most are PC Guns!

 

[Co Th G]

Smith should change the name of the "Performance Center" to "Profit Center" since that's all it is nowadays.

 

[BLUEDOT37]

I used the Brass Lap that you can use with a Power Drill. Following the directions carefully is the key not to overdue it. My crown came out smooth and perfect.

I like it. That looks good. I thought you had to use a cutter first but I've never researched it. What number grit paste did you use?

.

 

[Bushmasterguy]

600 grit silicon carbide. Worked great!