Crown Question

ptannjr · 03-31-2006, 12:32 PM

I bought a pistol kit made from a Romy G. the barrel has been cut just infront of the part that the gas tube locks into. My question is i hear people talking about recrowning and stuff like that. Is this some thing i should consider on this? is it something i can do on my own or should i let a "real" gunsmith do it. I do have an account at Brownells if i need to order tools for it.

Preacher · 03-31-2006, 01:26 PM

When you crown a barrel, you are just making sure that it has been cut straight. If your crown is crooked it can affect how the rifle shoots. Sometimes the end of the barrel is chamfered slightly just to knock off the rough edges.

That's pretty well the limit of my knowledge on the subject. I'm sure some of our experts will chime in with more.

SalBO · 03-31-2006, 03:25 PM

its easy to crown a barrel with the right tools and they only cost about 50 bucks or so to do it right....... www.brownells.com or www.salboarms.com .....

Moon · 04-01-2006, 05:23 AM

I've crowned a barrel before. I used a screw-head (in a power-drill) and some grinding compound. It ain't rocket science, man. The method I used is kinda ghetto, but it does work.

5knives · 04-01-2006, 12:51 PM

MoonShiner has it right,

I've done the same and also use a Dremel tool (very, very, very gently.) with one of the ball grinder things.

But moonShiners way is better and safer.

All you are doing , once the barrel is square, is breaking the sharp edge of the bore where it meets the muzzle.

First thing to check on a firearm with accuracy problems, especially mil-surps.

You need the gas behind the bullet to leave the bore nice and evenly.

Otherwise it upsets the bullet and gives it a push off center.

Regards,

ptannjr · 04-01-2006, 12:57 PM

good stuff folks. looks like this may have already been done so i am not going to worry bout it for now till i get the gun built

NCshooter26 · 04-02-2006, 02:40 PM

thanks for the heads up, also. I've been thinking about pistolizing a spare Romy kit, but don't really know where to get started. Anyone got any links to a walkthrough on cutting, crowning, and redrilling the gas port?

03-31-2006, 12:32 PM	#1
ptannjr Just a dude! Join Date: Mar 2006 Location: Ocala, Fl Posts: 6,059	Crown Question I bought a pistol kit made from a Romy G. the barrel has been cut just infront of the part that the gas tube locks into. My question is i hear people talking about recrowning and stuff like that. Is this some thing i should consider on this? is it something i can do on my own or should i let a "real" gunsmith do it. I do have an account at Brownells if i need to order tools for it.

03-31-2006, 01:26 PM	#2
Preacher Chaplain/Moderator Join Date: Mar 2006 Location: West Virginia Posts: 11,321	When you crown a barrel, you are just making sure that it has been cut straight. If your crown is crooked it can affect how the rifle shoots. Sometimes the end of the barrel is chamfered slightly just to knock off the rough edges. That's pretty well the limit of my knowledge on the subject. I'm sure some of our experts will chime in with more. __________________ You and I have a rendezvous with destiny. We will preserve for our children this, the last best hope of man on earth, or we will sentence them to take the first step into a thousand years of darkness. If we fail, at least let our children and our children's children say of us we justified our brief moment here. We did all that could be done. Ronald Reagan - 1964 ------------------------------------- Bunker Member #4.

03-31-2006, 03:25 PM	#3
SalBO Gun Refinishing Monkey Join Date: Mar 2006 Posts: 799	its easy to crown a barrel with the right tools and they only cost about 50 bucks or so to do it right....... www.brownells.com or www.salboarms.com .....

04-01-2006, 05:23 AM	#4
Moon IncogNegro Join Date: Mar 2006 Posts: 5,825	I've crowned a barrel before. I used a screw-head (in a power-drill) and some grinding compound. It ain't rocket science, man. The method I used is kinda ghetto, but it does work.

04-01-2006, 12:51 PM	#5
5knives KaBoom Kontrol Modulator Join Date: Mar 2006 Location: Colorado, Western Slope Posts: 16,229	MoonShiner has it right, I've done the same and also use a Dremel tool (very, very, very gently.) with one of the ball grinder things. But moonShiners way is better and safer. All you are doing , once the barrel is square, is breaking the sharp edge of the bore where it meets the muzzle. First thing to check on a firearm with accuracy problems, especially mil-surps. You need the gas behind the bullet to leave the bore nice and evenly. Otherwise it upsets the bullet and gives it a push off center. Regards,

04-01-2006, 12:57 PM	#6
ptannjr Just a dude! Join Date: Mar 2006 Location: Ocala, Fl Posts: 6,059	good stuff folks. looks like this may have already been done so i am not going to worry bout it for now till i get the gun built

04-02-2006, 02:40 PM	#7
NCshooter26 Senior Member Join Date: Mar 2006 Location: NC Posts: 2,672	thanks for the heads up, also. I've been thinking about pistolizing a spare Romy kit, but don't really know where to get started. Anyone got any links to a walkthrough on cutting, crowning, and redrilling the gas port?