Cast lead in a Sig 220

[ThreadKiller]

I posted this question over on the Sig forum but got no takers.

I fired 2 boxes of Ultramax 200 gr SWC's through my 220 last weekend. First cast bullets I've sent downrange out of it. Leading was fairly significant in the throat of the barrel. More than I would expect for just 100 rounds.

Is this considered "normal" for a Sig with their hammer forged barrels?

It wasn't that bad to get out once I went to the copper Chore Boy scrubber wrapped around an old bronze brush.

I can live with this but am wondering if maybe the bullets were a tad too hard?

Thanks!

Tim

 

[Werewolf]

In my experience lead bullets that are too hard cause leading just forward of the chamber as you've experienced. This is due to the hard bullet not forming a good seal as it shapes it self to the bore. Hot gases get by the base of the bullet and voila - leading.

Too soft on the other hand usually leads to leading at the muzzle end.

I've not shot lead out of my P220 (and probably never will) but I've shot plenty of it out of my .45LC revolvers.

The lead is not really a chore to remove - there's at least 3 methods to do it that I can think of. Trouble is you have to remove it. Letting it build up can be less than safe as I'm sure you know.

 

[tc300mag1]

Yep to hard need to use something little softer if you want to continue to shoot lead out of it

 

[rick_reno]

Cast in a Sig 220

I've shot lots of Laser Cast lead bullets out of 220 - I use the 200 gr. SWC. I don't know how many thousands of these I've shot, but it's been a lot. It's the only bullet I use. I haven't seen anything like what you've described. My load is 5.2 gr. of W231.