The bolt face rim on the Sisk action is cut at an angle to help align cartridges onto the bolt face. The extractor is an “M-16” style with a plunger ejector.
The tang of the Sisk action is larger and heavier than the tang on Remington Model 700 actions. That increased area provides more surface to bed the action in a stock.
The Sisk action receiver body is tubular. Sisk says that tubular shape makes it easier to machine than a receiver with a flat bottom and sides.
30 oz. and the Extreme 32 oz. The Sisk action has a bolt with a straight handle, instead of the Remington’s swept back handle, that provides more leverage to open the bolt. The bolt knob also un- screws, so it can be changed to another one. The bolt itself has spiral flutes cut into its body. “They’re pretty much for looks,” Sisk said, “because the cuts re- ally reduce weight only about half an ounce.” The bolt stop is located at the left rear of the receiver. On the opposite side is a two-position safety that does not lock the bolt closed when the safety is on the “safe” position. The bolt face rim is coned to help align cartridges onto the bolt face and into the chamber, and the extractor is an “M-16” style spring- loaded leaf located on the left side of the right locking lug that hooks over a cartridge rim. A plunger on the bolt face throws fired cases and cartridges clear of the receiver when they clear the ejection port. The ejection port is rather large,
The Sisk action has a large ejection port that provides plenty of room for cases and cartridges to eject and for the fingers to load the magazine.
especially compared to some recent ac- tions that have a port cut so narrow it looks like a slot on a mailbox. Sisk said with a plunger-type ejector a cartridge or fired case often does not have time to eject before the bolt is pulled full-rear- ward and that can result in the extracted case or cartridge lying loose on top of the magazine follower. “Now you have to pull the bolt back hard and fast for that to happen,” he said. An angled cut at the rear of the port provides some ad- ditional room for cases and cartridges to positively eject. That large opening also provides enough finger room to easily load cartridges into the magazine, clear cartridge jams and insert a finger into the chamber to check for the presence of a cartridge. Sisk said he uses his new action on
as many of his rifles as he can. However, some customers still want to use other factory actions as a basis for their rifles. “My action costs considerably more than other actions,” he said. “But I charge the
The bolt of the Sisk action has spiral flutes cut into the body. The bolt handle knob can be unscrewed and replaced with other knobs.
same price for a rifle made with it as I do for rifles made with other actions.” In the long run, though, using his action actually saves Sisk money because he does not have to spend a day and a half of work cutting the receiver threads to a single point and truing the receiver face, recoil lug recesses, bolt face and locking lugs like he does with other actions. BUILDING A RIFLE
Sisk used one of his short-actions
with a Lilja barrel to make up a rifle for me to shoot. Sisk chambered a Lilja barrel in 22-250 Remington, turned it to a sporter weight contour and cut it to
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www.varminthunter.org Page 91
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