why does new pardner 12 gauge have smaller locking lug?

[wendigo]

I just bought a new H&R  pardner in 12 gauge a few days ago and  noticed that the locking lug that locks the action closed is much smaller than the lug on my 12 year old NEF pardner, which is basically the same gun. I also have pardners in 20 and 410 gauge which have the same small locking lug as my new 12 gauge.
I was wondering why did they start making the 12 gauge pardner with the smaller lug which was previously only used on the 20 and 410 gauge guns? Being that the 12 gauge is more powerful, wouldn't this weaken the action? When did this change occur?

[tacklebury]

I'm not a smith, nor do I work for H&R, but a lot of the size of the lug may have been changed due to a material change, hardening process change or perhaps it was considered unnecessary after being tested.  These days, in manufacturing, there's a lot to be said for being able to use the same part in multiple places.  Maybe you should call or write them to see if there is any background available. 

[gcrank1]

I would trust the answer from Brian, but not likely anybody else............

[wendigo]

Thanks for the replies. I was just a little concerned whether this could cause premature wear and tear on the action when firing heavy loads.