Check how old your guns are
http://proofhouse.com/
ProofHouse.com
Browning Serial Numbers
Colt Serial Numbers
Gun Codes and Markings
House Brand Conversion
United States Military Small Arms Inspectors Markings
Winchester Serial Numbers
WWII German Ordnance Codes
I just used this site and found that a 1895 Winchester rifle my grandfather purchased was mfg in 1933 and there was only 103 of them made that year. He died in 1942 and my dad used it for 50 years finally passing it on to me.