[Joejojoba111]

How big a deal is chrome-lining a barrel?
If you don't have that option is it worth it to upgrade from Chrmolly barrel to stainless steel?

If you have the option for Cryo Accurizing, is it worthwhile? Doesit work better on stainless steel or chromolly?

Thanks for reading.

[mete]

You can't chrome plate after the barrel is made since it would change the bore dimensions.Cryo is a waste of time, it hasn't been shown to be effective [by the NRA etc].Upgrade barrel to stainless ? what kind of rifle for what use ??

[MagnumCaliber357]

He wants to know whether its worth it as an add on. JP and MODEL 1 both offer chrome lined bores and barrels for a significant extra charge. The chrome prolongs the life of your barrel thats the only advantage. the disadvantage to chrome is it apparently is less accurate. In a semi auto thought you might want to reconsider whether a few extra rounds is worth that much. Now if you had DA SWITCH, itd be another story.........

[AZ Jeff]

Chrome plating is primarily used to increase durability of the barrel when exposed to corrosive environments. This is particularly true when corrosive ammo is fired through a barrel. It's presence also makes the cleaning of such barrels easier.

Chrome plating, but the nature of being an additive process, results in internal barrel dimensions that are less consistant than with barrels without chrome plating. The end result is that a barrel with a chrome plated bore is slightly less accurate than one without the plating, all other factors being equal.

For true barrel life increase (delayed bore erosion), stainless steel is the material of choice, as stainless resists the hot propellant gasses better, but can be cut to the same level of precision as carbon steel barrels.

The jury is still out on the benefits of the cryo process in some peoples minds. Regardless, the cyro process can be applied to either stainless or carbon steel barrels with equal results.

Doing a cryo process on a chromed bore would be akin to putting a big power engine in a car with bald skinny tires. Any benefits from the one would be neutralized by the other.

[Joejojoba111]

Great, awesome stuff, thanks. Yea they were options, one rifle came with chrome barrel standard, another did not have the chrome option but came Chromolly standard, with stainless steel as an option, and cryo available for both.

From what I heard then Stainless Steel is the choice of champions, Danke.

[jefnvk]

I wouldn't worry unless you plan on throwing lots of lead downrange. I know some people will kill me over this point, insisting that if you don't have chrome, you will lose your barrel within 100 shots, but I look at all my other rifles (lets say something like 18, or thereabouts), and how many of them are chromed lined (less than 1, which means none).

[nico]

For true barrel life increase (delayed bore erosion), stainless steel is the material of choice, as stainless resists the hot propellant gasses better, but can be cut to the same level of precision as carbon steel barrels.
I've actually read (I think it was in the archive of Gale McMillan's posts on TFL) that stainless can be cut more accurately than carbon steel because it's a little softer and therefore easier to machine. Unless you're talking about match barrels I doubt it'd make a significant difference though.

[Mike Hull]

It's not so much the material the barrel's made of, as the bore's finish.

A factory stainless is going to foul just as badly as a factory chrome moly barrel.

Custom barrels have the bore's polished, then the ends are parted off so you have no wear at muzzle or breech. That's why they cost more.

They are far easier to clean etc, and velocity is actually a bit better from them than most factory barrels, given equal loads.

There are any number of custom smiths that can do a very good job for you in installing, trueing the action at the same time, etc.

[45crittergitter]

http://www.thehighroad.org/showthread.php?p=1737676#post1737676