Barra Slugs in the 250z

[OneAcreFarmer]

Has anyone ran slugs in the .25 cal. 250z yet? If you have what size did you have luck with? Thanks.

 

[Cantona256]

I promise I will try some more slugs and probably port some things on my 250z. I’m just waiting until my replacement stock gets here from Barra. I screwed the factory one up trying to install a side folding adapter. It’s kinda hard to shoot a stock less gun.

Totally understandable

 

[PumaCarl]

I promise I will try some more slugs and probably port some things on my 250z. I’m just waiting until my replacement stock gets here from Barra. I screwed the factory one up trying to install a side folding adapter. It’s kinda hard to shoot a stock less gun.

That's why I didn't touch my stock, I was worried about screwing it up, and I have way to much time into mine to risk it.

 

[_CTAIRGUNNER_]

So here's my advice with slugs in any gun, especially ones with unchoked barrels. You can try a ton of different slugs in different sizes till you find one that's the most accurate. Nothing worng with that method. Or you could slug the barrel and measure the slug with a micrometer to find a good starting point in the right slugs size to buy and try.

I found alot of chineese barrels are oversized. I sluged a Umarex zelos .25 barrel and it sluged at .2541. Also vulcans, uragans, leshy and few other run oversized barrels.
Example a vulcan .30 cal shot ok/good with .300 size slugs. But it was stupid accurate with .3063 size. The right size as the barrel sluged at .3061.

I noticed oversized bore are particularly common on chineese barrels. With the zelos oversized at .254, it made sense why .249 were terrible and .250 slug weren't particularly accurate. Some were ok or possibly acceptable at shorter ranges like 50 yards. But at long range it will become more apparent.

In addition it's possible to be loosing 20 to 30 fps with the same grain slug that is undersize to the grove of the barrel. I ordered .254 slugs to try. In general you want the slug to fill and seal the grooves. Just something to think about with unchoked barrel and slugs.

Zelos .25 cal measurement
View attachment 551500

Best advice you can give, I really really dislike the "TRY 100 different ammos" method, it gets costly, and disappointing, gives me a sour puss on my face lol.

Slugging the barrel is the best advice one can give

 

[Cantona256]

Best advice you can give, I really really dislike the "TRY 100 different ammos" method, it gets costly, and disappointing, gives me a sour puss on my face lol.

Slugging the barrel is the best advice one can give

How do you slug a barrel?

 

[_CTAIRGUNNER_]

How do you slug a barrel?

Take a measurement of both ends of the barrel, breech and muzzle end with a caliper, buy a slug that is as close to that measurement as possible, push it down through the barrel , breech to muzzle, measure that once its come out.

You will still probably have to try different slugs but youre going to get as close to the correct diameter projectile that you need before trying different rounds.

 

[cosmic]

I just take a slug and squeeze it in a vice to bigger than the bore.. The tap it into the bore with a rod... Run it in the 250z case, all the way thru the barrel and measure..