I had a chance to interview Landon Gines at Pure Precision Rifles about action design. He, John Hakes, and Alex Wheeler just finished the new lightweight SKLTN action. It's a 20-minute interview that dives into different aspects of materials, features, and manufacturing.
Designing the Perfect Action - Interview
- Thread starter ShooterOpinions
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What is the cost of the action?
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Shooter Opinions answers:
ShooterOpinions
- Today at 6:09 PM
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I’ve ordered a SA Mag bolt face, going to try a LA Mag bolt face as well.
BountyHunter
Gold $$ Contributor
Competition or tactical/hunting actions? What say you Alex?
jackieschmidt
Gold $$ Contributor
I think this guy is pretty darned smart.
Except for the material discussion comparing Titanium to either properly heat treated Alloy Steels and the Precipitation Hardenning Stainless Steels. (Not 416).
While Titanium does offer a lighter weight with adequate strength, (emphasis on adequate), it does not posses the mechanical properties of true alloy steels such as 4140, 4340, or 17-4 in the properly heat treated ranges suitable for actions.
That includes Tensile Strength, Yield Strength, and Ductility.
Except for the material discussion comparing Titanium to either properly heat treated Alloy Steels and the Precipitation Hardenning Stainless Steels. (Not 416).
While Titanium does offer a lighter weight with adequate strength, (emphasis on adequate), it does not posses the mechanical properties of true alloy steels such as 4140, 4340, or 17-4 in the properly heat treated ranges suitable for actions.
That includes Tensile Strength, Yield Strength, and Ductility.
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Alex Wheeler
Site $$ Sponsor
Its a light weight hunting action. These guys came out to my shop probably 2 years ago and we went over everything about actions. They really wanted to make an accurate smooth action and I think they did for the purpose. Its much smoother than may of the other skeletonized actions out there. Its timed very well, with a ton of firing pin fall and a proper spring. It does open stiffer like a 3 lug because the 75 degree bolt thrown and the pin fall/spring. But, I dont mind the trade off. Been using some of these lately and I like them. Have a ti coming for a 25x47 rifle for myself. @GlennK has a 6.5 prc I sent him with one of the steel actions on it. He should be shooting it soon.
VA_XTC_Shooter
Silver $$ Contributor
I don't follow the pre-fittable discussion. I am not understanding what makes this action pre-fittable vs others vs a shoulder fit. If the action bolt nose and action face are not parallel, that would affect both shouldered and pre-fit barrels. Its not like you cut the barrel differently to fit a non-parallel receiver.
Alex Wheeler
Site $$ Sponsor
Prefit does not mean always mean theres a nut. Many actions including this one use shouldered prefits. All he is saying is that they hold the tolerances close enough that the headspace and thread timing wont change so you dont need the action in hand to chamber a barrel for it.
jackieschmidt
Gold $$ Contributor
This is a problem in any machine shop work. A little his way, a little that way, and by the time you add them all up you have a piece that fails in critical areas that you wish to be truly straight and square with each other.
I am a stickler for tenon threads and the faces that they seat on be as close to perfect as can be achieved. Of course, the one true way to accomplish this is to do these critical operations on the same machining set up. We assume that since the vast majority of machining performed on today‘s actions are now accomplished by CNC, this should not be a problem.
That is, unless there is a flaw in the setup. I enjoy watching videos of various machining operations. Not only to learn, but to analyze their set ups and their ability to avoid inducing runnout in critical areas.
As always, the rule in precision machine shop practice is…….never assume anything.
Understood. I liked it because he explained in simple, layman's terms, an important design detail that I've seen many engineers not comprehend.
Jonnyofalltrades
Silver $$ Contributor
I'm not experienced at machining titanium, but some of the newer alloys have almost unbelievable numbers for tensile strength and fatigue resistance.
I think triple5 or 5553 are right in there with the alloys you mentioned for strength. Machineability doesn't sound very nice, and I can't imagine the cost.
I'm in no rush to jump on the bandwagon.
4140 will always be my first love.
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Clancy
Silver $$ Contributor
I think this is a very nice action for the intended purpose. The stiffer bolt lift is not my cup of tea but for a rifle that may never sit on a bag it’s no big deal.
I still think the TL3 is untouchable, for the time being. If it had one fault it was maybe a bit short on pin fall, but that’s since been remedied. My new one, purchased from Altus has about .038 more fall than my old one when using the Diamond.
Anyway, very nice, even if not revolutionary. I hope they do well.
I still think the TL3 is untouchable, for the time being. If it had one fault it was maybe a bit short on pin fall, but that’s since been remedied. My new one, purchased from Altus has about .038 more fall than my old one when using the Diamond.
Anyway, very nice, even if not revolutionary. I hope they do well.
Heck yeah. Did it come in yet?
Yes sir and the rifle is built already, I have one range trip with forty rounds fired
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