wheelie
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Posts posted by wheelie
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BMT = Wonderful
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Will your bullets drop through the chamber throats?
I bet they will, and I bet they are real loose.
It'd be better if you had to push them through.
Larger bullets might help.
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If your new rear sight is .025 higher than the old one, add .025 to the old front sight height to get the new height. Or whatever the numbers are. All will be well.
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Don't know about ICORE rule interpretation, but be sure to look for some reference to the ability of the gun to operate (or not) while in the holster. A strap over the hammer keeps the gun from operating while holstered. That's generally the spirit of the rule and generally the letter unless its written very strictly.
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End shake is determined when the cylinder is closed and locked in the frame.
You need little bit of play or the gun won't work when dirty and/or hot.
What you describe is normal, but not end shake.
I see 2 problems you ask about:
1. Leading
2. Low velocity.
As to # 1, its probably just a poor fit of bullet in the throats of the cylinder. What bullet are you shooting? What powder and how much?
For #2, you may just have slow gun. Add more powder.
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So there are divisions and classes.
Divisions:
Open
Limited
Limited 10
Production
Single Stack
Revolver
Classes:
Grand Master
Master
A
B
C
D
And before that it was major, minor and A, B, C.
It was considered poor sportsmanship to offer stages that revolvers had no chance of winning.
And dumb since about half or more of the folks who came were shooting revolvers.
We laughed at Browning Hi-Power shooters because even though they had a lot of bullets, they often could not knock over the metal which was set far harder than now-a-days.
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Revlovers make you work harder.
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Find someone who can use a file.
This is just not that hard for a person who is used to hand work.
Or buy a thin square file with a safe edge and do it yourself.
Give it a few strokes and check.
Repeat until it looks good.
Put some "draft" in the cut so you have a nice clean edge visible to your eye.
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Conventional wisdom is that a revolver's chamber throats should be about .001 larger than barrel bore diameter, and that the bullets should be sized to match the throats. IIRC, S&W made a batch of 625s with undersized throats that caused problems with lead bullets. Early M25-5s in .45 Colt typically had .455-.456 throats matched with .452 barrels and would lead badly with bullets sized .452, but worked fine with bullets sized to match the throats.
snipped...^^^This^^^
You may need larger diameter bullets.
And if the throats are smaller than the barrel you should have them opened up.
But I suspect this is unlikely given the particular guns you are shooting. Its probably throats being bigger than ideal.
Larger bullets may make for difficult loading the cylinder.
I have shot plenty of lead cast bullets at 1100-1200 fps with no leading.
To do this everything has to fit.
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Kensight is the OEM of STI, Ed Brown and others. It is an exact copy of the BMCS.
So, that's about it?
I had wondered if thye weren't all made in the same place.
Any other contenders for rear sights?
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If the S&W barrel system on those aluminum frame/shroud guns is like the old Dan Wesson revolvers, its just a matter of turning the barrel blank to length, correct diameter and threading the ends. I have not seen one of these apart, they might be different from what I'm thinking.
Years ago I built a .38 Super 1911 with a Bar-sto barrel that shot .355 JACKETED bullets magnificently. It might be that if you use only jacketed you can use the barrel that's on the gun now. Lead bullets may be a problem if your revolver has throats larger than the bullet size. A little testing on any of this would not be that hard.
And a question - does S&W sell any "raw" cylinders? As in not chambered and unfinished throats?
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I used to be happy with Bomars. Now that they're gone, what is the most reliable replacement?
This is for a new pistol build.
Thanks!
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Just an FYI...... I still can't produce less than a 6 inch group at 25 yards with my .40 caliber M&P Pro 5 inch gun. I have tried everything under the sun to improve the accuracy beyond that and it just does not happen. After investing a significant amount of time and money trying to make my M&P Pro 5 inch accurate and failing to make it happen I gave up on the project. It simply does not make sense to invest more than what the gun costs to try and imporve the accuracy and STILL not get the job done.
I've been trying to talk myself into one of these blasters but I think you just talked me out of it.
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Go buy a box of brand new Winchester, Remington or Federal ammo, shoot it and report back.
Can M&P40 Pro only shoot well on brand new ammo?
I thought this was meant to be a competition gun?
No, it just means that we have no idea of the quality of his purchased reloaded ammo. Most major factory ammo will shoot pretty well, so when a accuracy problem arises its a good check to see whats going on.
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Go buy a box of brand new Winchester, Remington or Federal ammo, shoot it and report back.
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How about allowing 8 shot revolvers in Single Stack? It'd be pretty fair, based on round capacity.
I'd still score by actual power factor.
I don't think modifying an existing, and successful, division is acceptable. Revolver division is where 8 shot revolvers belong. Shunting them off into other divisions doesn't help revolver division at all.
-ld
All that would happen is to let revolvers shoot with the SS guns. 8 shot guns shooting with other 8 shot guns. Nothing there to destroy a class, just let more people shoot.
Letting 8 shot revolvers in the current revolver class does nothing but changes out the --single-- gun that is most competitive, from the 625 to a 627. If that's got to happen, at least let power factor be decided by actual power factor. (major and minor)
We'd have more revolvers shooting even if they ran in differrent classes. It'd give revolver shooters another class to shoot in.
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How about allowing 8 shot revolvers in Single Stack? It'd be pretty fair, based on round capacity.
I'd still score by actual power factor.
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If you can, you might try reducing the diameter of your neck expander a bit to get more bullet pull. Generally that is a more effective and consistent way than altering the crimp.
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The TRR8 and 627 is currently legal in every USPSA division except SS. FYI
Legal but useless. They are revolvers, not Production/Open/Limited/L10 guns that just happen to only hold 8 rounds.
Wow.
Lets just outlaw revolvers for USPSA shooting - they're all useless.
Kinda like the underlined post.
How's the trolling?
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I think it's worth pointing out that whenever you put the issue of Minor-8/Major-6 to a poll, the respondents seem to favor it roughly 2-to-1.
The detractors are louder, but they are distinctly in the minority.
Leaving 8 Major out of the polls makes sure no one votes for it.
I'm not arguing against 8 Minor. I am arguing FOR more inclusion which logically (to me) includes 8 Major as well. Please supply a good reason to NOT INCLUDE 8 Major.
Good golly! it seems so apparent that allowing more guns in will result in the possibility of more people competing.
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Once the deciding factor in USPSA became volumn of fire (and speed), the revolver became a historical relic. To know, even though you're a pretty good shooter, that you'll finish in the bottom quarter of the total entry makes it a difficult choice to decide to show up anyway and shoot for yourself and maybe against 1 or 2 other round gun shooters. Most folks won't do that. What we're left with are the true revolver die-hards and a few looking for a special challenge. And of course the guys who shoot guns that hold a bunch of ammo. A bunch of ammo in your gun is a big advantage in USPSA shooting. Period.
Imagine the 8 round per array rule changed to 6 round, then imagine that it was changed to 12. Run the numbers through your mind. What are the advantage and disadvantage possibilites for the various gun classes we have now? What would win overall? Who would be hind tit? Now figure out who might take up skeet shooting.
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Have fun with the series 80 parts, other than that, great guns.
ughhh
didn't know that they were 80s
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snipped a bunch..........
I would prefer to just remove the 6 shot restriction and let people shoot 8 shot major if they like. Open up Revo and make it a division that appeals to the shooter who wants something new and challenging, and let him pick the nature of that challenge. But I'll be satisfied with 8 shot Minor.
Open Up Revolver!
Any revolver, minor and major scoring as done in other classes.
More ways for more people with different revolvers to have fun.
Would you require 40cal for Major like Limited or allow 9mm to make Major like open?
I'd go on power factor alone.
If you're using a .357 revolver its easy as pie.
Or you could shoot plain ol' 9mm or .38 Super, or 9X23 or anything that made your skirt blow up.
If it passes the test its major.
The advantage of the short rimless cases is that they would load a bit better, balanced against the difficulty of reaching major with the limited powder capacity.
I think its a safety issue to eliminate 9mm major in auto pistols, revolvers might not be so problematic. Or they might. If it becomes a problem deal with it then. There's too many rules as it is. I suggest simplicity as the first best answer.
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snipped a bunch..........
I would prefer to just remove the 6 shot restriction and let people shoot 8 shot major if they like. Open up Revo and make it a division that appeals to the shooter who wants something new and challenging, and let him pick the nature of that challenge. But I'll be satisfied with 8 shot Minor.
Open Up Revolver!
Any revolver, minor and major scoring as done in other classes.
More ways for more people with different revolvers to have fun.
Need Help from the Revolver Experts
in Revolver Forum
Posted
How big are those jacketed bullets that have to be pushed through?
Can you measure the groove diameter of your barrel?
Next guess is that the cylinder throats are sizing the bullets down smaller than your barrel wants.
You my need to open them up a bit. But don't do this until you measure and consider carefully.
In an ideal world, you want the bullet to fit the throat snugly, then still fit the barrel snugly when it gets there.
You want a good seal of the gas as the bullet starts to move in the throat and a good seal and full grip when the bullet engages the rifling.
An undersize bullet in the throat will lead and an undersize bullet in the barrel will lead. (or be more prone to lead)
If the throat is smaller than the groove diameter then the bullet will exit the throat too small for the groove diameter.
The throat may have sized the bullet down.
.451 throat with a .452 bullet = a .451 bullet entering the barrel. If the barrel is larger than .451 you don't have a good fit.
But all that is conjecture until you measure.