Seating boolet below the neck????

[abunaitoo]

I always try not to seat the boolet below the neck.
Seems like they just shouldn't be.
Correct or not?????

[Hick]

I've read somewhere that it is not good to seat the gas check below the neck. I generally try to avoid that if possible. I do occasionally seat plain based boolits below the neck. BUT-- I haven't done any real tests to see if it makes a difference

[waco]

Ever load 240gr boolits in a 300BLK?
It's going below the neck. I have not had any issues.
I just got a new to me Rem. 722 in 300 Savage and most cast boolits seat below the short neck a bit. It shoots just fine.

[GhostHawk]

One of the reasons I like the .30-30, long necks. You can load anything you want into that case.

Yes I prefer to keep them even or slightly above. But I have seated them slightly below with no ill effects. I do think it perhaps increases the odds of a problem.

[plainsman456]

Someone will come along and tell you if you do it can put your eye out.

It has been done for years and sometimes some floks have had a problem,mostly not shooting as accurate as they think it should.

[buckshotshoey]

.243 has a very short neck for caliber. It's one of the reasons some prefer the 6mm BR. The base of the boolit is going to seat deeper then the neck..... especially with 80 gr and up. My experience indicates no problems.

[blue32]

Seating below the neck is par for the course with 260 rem. I haven't experienced any problems. I imagine one would notice an ill fitting gas check before it was loaded.

[JonB_in_Glencoe]

More than once, I have come across a boolit-rifle combination which "required" seating deep (where the boolit base extends below the neck). They shot just fine.
>>>With that said, as a general practice, I try to avoid that condition.

[runfiverun]

I try to avoid it to but stuff happens.
one of my rifles shoots best if I just start the bullet into the case mouth then as I chamber the round it seats the bullet into the case.

[lightman]

>>>With that said, as a general practice, I try to avoid that condition.

My feelings exactly, I prefer not to. Many times it can't be avoided. A short throat or a short magazine often dictate how you seat the bullet. Throw in a long heavy bullet and you have no choice. I would really try to avoid it with a gas check but otherwise I don't worry about it.

[BCB]

One of the reasons I like the .30-30, long necks. You can load anything you want into that case.

Yes I prefer to keep them even or slightly above. But I have seated them slightly below with no ill effects. I do think it perhaps increases the odds of a problem.

I agree except I went to the 30-40 Krag for the long neck. I do shoot the 30-30 also, but now prefer the 30-40 Krag cartridge...

Good-luck...BCB

[lotech]

There may be exceptions, but I've never found seating below case necks, if necessary, to be a disadvantage in any way. Most of my experience in this area has been with the 7.62x39, .300 Savage, and .308.

[dragon813gt]

Load for 300 Savage and you will be seating them below the neck. No issues doing so. Even when gas checked. If you listen to some people that gas check will blow your gun up when seated below the neck.

It goes w/out saying that you should try to keep the bullet in the neck. But it's not always possible.

[sharps4590]

Pretty much been covered but I'll throw in my two pennies. Same as others, I prefer not to seat below the neck but sometimes there isn't a choice. I've not experienced any problems from deep seating with either plain base or gas check bullets. The issue is all the experts who aren't experts, those who have loaded 200 rounds of jacketed bullets for one cartridge and know all there is to know about handloading.

[Wayne Smith]

Years ago, when Lyman gas checks were slip on, it was good advice. Now that they all crimp on I'm not sure it make any significant difference. If you have old Lyman gas checks reserve their use in long necked cartridges!

[Texas by God]

It may not be desired but it makes no difference IME. 300 Savage is great with cast.

Sent from my SAMSUNG-SM-G930A using Tapatalk

[lotech]

sharps4590-
I suspect your statement is quite true. This topic comes up on a regular basis and Internet experts who have read somewhere this procedure won't work preach that it won't work, but have no experience with it not working. There are always exceptions, but real reports of the drawbacks experienced by seating bullet bases below case necks would be more useful information.

[Boolit_Head]

I've used some gator checks on a 160 grain boolet that ends up putting the check below the neck on a blackout. So far I have had no issues though I am not fond of it.

[gwpercle]

If we are talking bottle neck rifle and gas checked boolits , you didn't say , I was taught it was best to not seat the check below the neck. Not knowing any better I went with it .
I'm sure new and modern testing has proven this all wrong, but I'm sticking to my old ways because they work for me.
Gary

[Larry Gibson]

If you seat a cast bullet, GC'd or not, below the case neck of a bottle necked cartridge there may or may not be a noticeable affect. Whether there is or not depends on several things;

Intensity of the load (heat generated and time of exposure before the bullet moves into the bore)
Pressure generated (time/pressure curve and max psi during exposure)

Note; the above leads to what we call "gas cutting". If this thread were in the handgun forum many would be yelping to high heaven over the probable bad affects. Also since the exposed part of the bullet is essentially "undersized" since the gas can get around and onto the sides of the bullet and does not "fit" they should be yelping to high heaven about "fit is king".

Another factor where the adverse affect may not be noticeable is with the short ranges many shoot cast bullets at. This included the long heavier bullets used for subsonic loads. At such short ranges damaged bullets often give "acceptable" accuracy results.

It has been known for a long time that serious damage can be done to the bullet by simply seating below the case neck. This was documented years ago in the NRA Cast Bullet Handbook. Below is a picture from the article showing a 311284 seated to base of the case neck (left) and a 311284 seated below the case neck (right). Both were cast of the same alloy at the same time. They were shot in a 30-06 with the same load. The damage done by gas cutting to the right bullet is obvious. Such damage probably would only begin to deteriorate accuracy at 100 yards if shot in a milsurp -06 with issues sights. Might not even be noticeable. However, if bench rest or target shooting in a rifle with a scope where accuracy counts the degradation of accuracy would be very noticeable.

Attachment 204180

I do not load cast bullets with the GC or bas below the case neck.