| 4seventy |
| (Sponsor) |
| 21/01/04 11:37 AM |
Re: .22 LR Rimfire Double Rifle Project
|
Marrakai
Yeah, I'd want to get the barrels as close together as possible simply to keep the gun looking trim.
I've seen a few shottie to double rifle conversions that ended up with a wide barrel spacing at the muzzles and they look ugly and clubby.
In reply to:
No worries about barrels time, because there is no recoil, no need to worry about pressures, there is none to speak of.
Mac
Barrel time is only an issue(rimfire or centerfire) when you are trying to duplicate the barrel time of a load that a gun was originally regulated to shoot.
When building a double rifle from scratch, barrel time will be determined by whatever load you intend to use and the barrels will need to be regulated to suit that load and its actual barrel time is neither here nor there so long as you continue to use that same load.
When it comes to doing the regulation on a 22 rimfire double, the actual job of getting the barrels to shoot together will be just as involved as with any other double and will also depend to some degree on how the barrels are constructed and joined.
The only thing which will make it less difficult is that it is much easier to do the shooting during regulation, with a 22 rimfire than with a big hard kicking NE cartridge.
Also regarding pressure, the little 22 rimfire still has enough pressure to cause damage and possible injury if it is not contained.
While any 410 SXS action should easily handle the much lower 22 rimfire pressure there are other things to consider.
Things like how well the extractors fit into their recess within the chamber and also how much clearance the firing pins have within their bushings.
These two areas are IMO where the 22 rimfire case can and sometimes does rupture if the fit is in any way loose, especially with the "hot" rimfire cartridges.
In reply to:
After the regulation is complete, then cut can be milled in the chamber faces for the extractor, the ribs fitted, and final sights fitted
Mac, I'd be interested to know why you would want to complete the regulation on a double BEFORE the ribs have been fitted/layed?
