Shilen .222 chambers

[swd]

Some of you guys are playing with fire and if your not damn careful are going to blow up a rifle or worse. There's a very good reason for a decent amount of neck clearance.

 

[1911nut]

Some of you guys are playing with fire and if your not damn careful are going to blow up a rifle or worse. There's a very good reason for a decent amount of neck clearance.

Yup, you’re right. I wasn’t recommending neck clearance in the tenths, just giving information how it has been successfully done.

I’m glad I didn’t blow my self up not knowing my 40 X had a tighter than the current SAAMI chamber neck when I first shot the gun last week.

I shot the gun today with ~ 0.001”+ neck clearance and groups were much improved. The Remington 7 1/2 primer appears to tighten up the groups compared to the Federal 205m primer. Much more load development needed.

A friend who doesn’t shoot bench guns shot targets 3 and 4. I’m ok with what was shot today this being the first time out shooting the gun with safe ammo.

 

[afret]

Glad it shot better today. I didn't realize primers could make that much of a difference. I learn something every day. What neck turning device do you use?

 

[1911nut]

Glad it shot better today. I didn't realize primers could make that much of a difference. I learn something every day. What neck turning device do you use?

I wouldn’t have thought a different brand of primer would do that either.

I use the Sinclair nt 4000 tool with this spinner in a cordless drill. It takes the Lee case holders, same as my K&N primer tool.

 

[afret]

How do you like the Sinclair unit? Does that case holder for the power drill work well? I was looking at that one. Seems to have good reviews.

 

[1911nut]

It’s the only turning setup I’ve ever used, not the most expensive. The internet folks say there are better. The spinner/holder takes some setup to get balanced and there’s a bit of wobble but holding the cutter lightly and going slowly gives good results. It takes practice. You’ll need an expander die/mandrel to fit the turner mandrel.

The Starrett/Sinclair neck micrometer shows the turned necks vary +/-0.0001”

Try a search here for turning tools. There folks here that are way more knowledgeable than me.

 

[afret]

Thank you for all the great info. I'll probably bite the bullet and end up ordering the 21st Century unit. Have you ever tried H322 or H4198 powders with your .222? I know you have a lot of success with N133.

 

[1911nut]

Not H322. 4198 in a friends Varmint gun, moa.

Mike Walker, the guy that designed the cartridge and gun I’m shootin who lived to 100 years old said in Precision Shooting in 1976, the year after my gun was made, bear with me, he said about loads (paraphrasing)— “My current load for the 222 with a 52g bullet , 24.5 g IMR 4895 and Remington 6 1/2 primers — bullets are seated long enough to hit the lands”

When I tried I4895 24.0 was a compressed load, I didn’t pursue. I’ll try 4895 again.

I got Mike Walker’s 2 oz trigger in my gun. That’s the coolest thing for me shootin stuff/wise all year.