Short SAECO Gas Check Shank

[fourarmed]

I just sized and lubed some boolits from my new SAECO 270 mould. The shank is quite short. When I seated the checks on the bullets, there was a mushy feel at the bottom of the stroke, and many of the checks show a concave bottom. Also, there is no noticeable lube groove at the leading edge of the GC. Is this normal with SAECO GC moulds? The only other one I have is an older 4-cav. plainbase mould.

[Slowpoke]

I just sized and lubed some boolits from my new SAECO 270 mould. The shank is quite short. When I seated the checks on the bullets, there was a mushy feel at the bottom of the stroke, and many of the checks show a concave bottom. Also, there is no noticeable lube groove at the leading edge of the GC. Is this normal with SAECO GC moulds? The only other one I have is an older 4-cav. plainbase mould.

Not sure if it is normal or not with Saeco moulds but I shoot the 305 and the 316 and they both have a short shank as well.

What works best for me is to anneal the checks, seat with a lubesizer with the check seater installed, Make sure the ejector pin is flat for seating checks , put a trace amount of case lube, lanolin, etc. on the base and sides of the check and seat the check firmly, I end up with a secure check with a reasonably flat base,( as flat as you are going to get with a lubesizer) and a hairline between the top of the check and the bottom of the lower band, makes it easy to see if they are seated square or not.

The good news is they shoot excellent, and in my mind puts a serious question mark on the validity of the importance of the longer gas check shank.

After shooting these for a couple of years, I think ole Aladin was correct .

Good luck

[fourarmed]

Hate to admit it, but I have never used my gas check seating attachment. Can you tell me what it does that is different from just snapping them on and running them to the bottom? I think they are going on squarely, but there appears to be a gap between the check and the base of the bullet. What would happen if you put a little bit of lube inside the check?