20 PPC info

[potatoe]

I was wondering if I could get some input on a 20PPC. I'm wanting to do something a little different to shoot groundhogs with and the 20PPC interests me.

I'll be looking to shoot the 32-40 grainers and want to know what twist is optimal for those bullets. Also I'm not familiar with the neck diameter of .20 cal bullets for a chamber. I'd like to atleast skim some off the necks and want to know what neck the reamer should be. Also I have a PPC die that I intend to use - I'll just swap out the bushing. Would that work?

 

[cmillard]

a 1-9" to a 1-11" is typical of the .20s out there. obviously go with a faster for the longer bullets. i think the 11" should work for those bullets

 

[potatoe]

What is considered a tight neck with a .20 cal?

 

[Phil]

Not sure if it is considered a "tight neck" or not,but i turn my necks to .012 that gives me a .228 loaded neck in a .230 chamber...

I don`t know if this is of any help to you or not........


Phil.

 

[potatoe]

Thanks phil. Thats what I was looking for. What twist is yours and what bullets does it like?

 

[potatoe]

Any idea on barrel life of a .20 PPC?

 

[Phil]

I built mine with an 11 twist....

It sure likes the 39`s... ;D

 

[JASmith]

Any idea on barrel life of a .20 PPC?

Bore capacity suggests somewhat better than half the life of a .308 Win or .223 Rem and a fair bit better than the .243 Win.

 

[Jeff]

I would get a 9 twist. Mine is a 10 twist and it's key holeing with 50gr Bergers. My friend has a 9 twist and does fine with the 50's. We are shooting 204's. How long is appx barrel life with a 20 PPC ? I have seen a 20 PPC that had the
throat eroded after less than 300 rounds. If I hadn't seen the barrel I won't have belived it.

 

[kjcpoint]

I also would go with a 9tw.

20br and a 20-250 with 9tw and they shoot 39's to 55's very well.

Kyle

 

[JASmith]

I would get a 9 twist. Mine is a 10 twist and it's key holeing with 50gr Bergers. My friend has a 9 twist and does fine with the 50's. We are shooting 204's. How long is appx barrel life with a 20 PPC ? I have seen a 20 PPC that had the
throat eroded after less than 300 rounds. If I hadn't seen the barrel I won't have belived it.

The .20 PPC has a case volume that is less than that of the .20 BR, .20-250, etc. and a 300 round or less barrel life would make these cases less than useful. This suggests that the 300 round erosion point was either a fluke (soft barrel, etc.) or the shooter was very cautious about things.

 

[SRM]

I have one and realy like it. 9 twist krieger. 40 and 50 grn bullets are fine.

I fireformed three hundred brass with pistol powder and schorched the throat for about four inches.

I want a new bbl but it still shoots at a .5 moa. Fouls bad though.

 

[GlennB]

I run a 40gr V-Max's in my 20PPC.
It has a 1in12 26 inch Lilja barrel.
Shoot unbelievable!
Shoots flat to 300 metres!

I don't know what the barrel life will be like till I wear it out but if I get a 1000 or more I will be happy!
Barrels are a commodity to me, they are screwed into actions so you can change them ;D

Cleans up real quick too!

Glenn

 

[joemax]

What was your rate of fire when you fire formed the 300 rounds?

 

[L461]

What brass do you intend to use.

I have a 1-10 that shoots 40grn V-max into tiny little groups using Benchmark.

Having a similar case capacity to a 204R I would imagine barrel life would be about the same.

Take the step you will never regret it.

 

[SRM]

What was your rate of fire when you fire formed the 300 rounds?

The first 100 were pretty quick. Slowed down for the rest.
I`d say fireform with bullets so this doesn`t happen. I`m gona get another bbl and save the old one to fireform.