Tuning Slug tuning-sometimes you just get lucky

[cmatera]

I got lucky twice. I bought a .22 Crown Continuum in a blue laminate stock last fall. Shot a few mags of 18.13 JSB's through it, seemed accurate, then put it away. A couple weeks ago, I listed it for sale, but got no offers. That was the first time I got lucky. I read a post by a member of how he loved his new Crown Continuum with the 380mm barrel, so I thought maybe I should shoot it a little more. I took down my listing, and shot some more 18.13's. It was accurate at 25 yards in spite of the high winds we've been having. The Mesa County (CO) airport had the highest one month wind readings in 37 years. I'm talking 35mph to 75mph almost every day.

Today, the winds let up a little. They were only 20-25mph. I figured what the heck, I'll give the 20.2 gr NSA slugs a try. I was shooting the 18.13 pellets at 907-915 fps, so I thought maybe I could get 980 fps or so from the slugs, without changing the tune. My transfer port was already on high and my power wheel was already on Max so I had no room to go higher, but I thought I'd give it a try. I could not get more than 860 fps average, but it shot four 5 shot groups like this:

Since most my shots are 25-40 yards, with a few 50-75 yards, I'm happy to have lucked into a dual tune (pellets and slugs), that fits my needs. Just luck.

 

[thomasair]

You can’t be too far from me. Im in Olathe, CO. Come down here and we can shoot some N50 matches.

Mike 

 

[Ghostranger169]

Yep, a Crown with same tune shoots both the JSB 18g and the NSA 20.2g well out of the 380mm barrel. The same tune will shoot the H&N 21g slugs very well also, out to 100 yards or so.

 

[balver]

@cmatetra, is yours an original Crown or a Mark2?

 

[pesty3782]

My “mini” crown loves the H&N .218 21 grain slugs right at 880…It is my favorite hunting rifle and is with me on a camping trip right now at a winery. Yeah it’s hard having friends who own a winery. So far in just 3 short trips to another winery the rile has over 50 ground squirrels and 5 rabbits under it’s belt…..so far longest shot was 115 yards.

‘Tony P

 

[cmatera]

My Crown is a MKII with a 580cc bottle and K&L buttstock.

K

I have to get some of those H&N's to try. That 380 barrel just amazes me, but I have 500mm, 600mm and 700mm' too. @thomasair I appreciate the offer. I don't think Olathe is far from me. I'm in Fruita. @Tony P, your post was the one that inspired me to give it a go.

 

[pesty3782]

Here is the first outing when it was shooting 18’s at 880 also. Don’t look at that other rifle Centercut was shooting…this is about the “Mini” crown

 

[thomasair]

Fruits is not too far. If you care to shoot some benchrest matches. I’m happy to have the airgun company. It’s darn near impossible to get guys interested in air guns over here. I think you would enjoy it. You can call or text if you are interested in getting together. 
Two Seven Five- Nine Two Four Seven.

Mike 

 

[pesty3782]

Cmatera 

Glad you like the 380mm barrel…I saw your post for sale, but figured between the wife and I we already have 4 crowns..


Camping at a friends winery and went out this morning, 7 ground squirrels from 17 yards to 100…not a bad way to spend an hour of the morning Will get out after they close at 5 PM and hope to schwack a few more for them…This is my go to hunting rig….It has never failed me and the POI hasn’t changed between outings.

Tony P

 

[cmatera]

I don' know who's worse, you or TMH! I only have 2.