Large Pistol Primers from Winchester! Quantity - 5,000 primers (50 trays of 100) Primer Type - Large Pistol #7 Manufacturer - Winchester Every Winchester primer is consistent in size and quality. These primers undergo rigorous testing in various temperatures far beyond the range of normal usage ensuring that these primers will live up to expectations. Winchester Primers are the best quality primers available today. Stock up on primers with LuckyGunner and save time and money. The haz-mat fee is billed per order. So if you order 5,000 or 50,000 the haz mat fee is the same. Primers are light so the shipping charges are small even in large quantities.