Gator 458 rifle checks

[Lead melter]

Gang
I just got a shipment of 3k Gator 458 rifle checks which are intended for an RCBS 45-405-FN and the Ranch Dog 460-425-FP boolits. The RD check shank is a snug fit in the standard Gator 45 caliber checks. As I understand it, the 458 rifle checks are a little thicker, affording a bit better bite on the shank.
Question is, will I need to anneal these checks before seating on the RD boolit? Or is the check mouth the same as the standard with just a bit thicker metal in the check itself?
Just trying to get some info beforehand so as to not mess up boolits or checks.
Thanks.

[felix]

Should not have to anneal the Gator's checks. ... felix

[Marlin Junky]

Where are these checks for sale and how much are they?

MJ

[Lead melter]

Marlin Junky,
Get Gator checks at Bullet Swaging Supply, Inc. 318-387-7257, or fax at 318-325-7034. The guy is a doctor of some sort, optomotrist, optician, something like that. When you call you'll be answered by a lady informing you that you have called a doctor's office. Just tell her you need some help with gas checks and need to speak to the "Gator"
.458 rifle checks are $28/1000. Order 5000 or more and shipping is free. Seem to be good quality in all I've gotten...30, 44, 45, and now 458.