If you've ever operated a Dillon 1050 for any amount of time you realize that the stock index arm shoulder bolt made by Dillon Precision has some down falls. The biggest being having to remove it to maintain lubrication. Also, when it is removed you chance damaging the stock return spring and reinstalling the index arm assembly is unnecessary aggravation and wasted time.
We've improved the shoulder bolts by:
- Machining our bolts from pre-hardened 4140 steel.
- Threading the bolt to accept a grease zerk. Easily lubricate just by hooking up your grease gun.
- Using a 45º grease zerk while utilizing an o-ring to help your grease gun clear the mainspring bushing (Dillon Precision part #11335).
In the end you have a shoulder bolt that's a direct replacement for Dillon Precision part #13276, extremely durable, perfect for high speed loading, and is 100% made right here in the USA.