The Firing Line Forums - View Single Post - Hornady LNL AP tons of force needed to seat primers

Waldog · September 26, 2011, 10:19 PM

What brass are you using? I have found that S&B and Amerc brass to have REALLY TIGHT PRIMER POCKETS. So much so, that I cull right into the trash. ALSO, WCC brass has crimped primer pockets and unless you trim the crimp you won't be able to seat primers.

That said, I have had my LNL for 5-6 years. I have never had a primer issue, except with the brass I have indicated. Some brass takes a little more force than others but, nothing I consider abnormal. My son and I just set up his NEW LNL and his primer system is perfect. NO problems whatsoever.

Check your indexing. If your indexing is off by just a few thousands it will make primeing very difficult. The reason is that if you are slightly "off" as you are seating the primer the shellplate will be forced to "line-up" with the primer plunger as you increase pressure on the handle.

It should in no way take the force you are describing to seat primers with the LNL. I have loaded on 3 different LNL presses and never had a primer issue with any of them. Check the indexing and make sure it lines up "dead center" on your shellplate.

September 26, 2011, 10:19 PM	#2
Waldog Senior Member Join Date: March 28, 2007 Location: SOCAL Posts: 359	What brass are you using? I have found that S&B and Amerc brass to have REALLY TIGHT PRIMER POCKETS. So much so, that I cull right into the trash. ALSO, WCC brass has crimped primer pockets and unless you trim the crimp you won't be able to seat primers. That said, I have had my LNL for 5-6 years. I have never had a primer issue, except with the brass I have indicated. Some brass takes a little more force than others but, nothing I consider abnormal. My son and I just set up his NEW LNL and his primer system is perfect. NO problems whatsoever. Check your indexing. If your indexing is off by just a few thousands it will make primeing very difficult. The reason is that if you are slightly "off" as you are seating the primer the shellplate will be forced to "line-up" with the primer plunger as you increase pressure on the handle. It should in no way take the force you are describing to seat primers with the LNL. I have loaded on 3 different LNL presses and never had a primer issue with any of them. Check the indexing and make sure it lines up "dead center" on your shellplate. __________________ I am the Christian Conservative that CNN warned you about!! “Socialism is the philosophy of failure, the creed of ignorance and the gospel of envy.” Winston Churchill