Hi
I 've heard that the new brno rifles have cast receivers or at leat they have used this method in the past too. if true which models are cast and which one is machined ones?TIA
regards
danny

Danny,

sems as if I read in the past that the new Brno/CZ stuff utilizes investment cast receivers. Nothing wrong with them, Ruger investment casts everything and most all modern pistol/revolver frames are made this way. NO, I don't like it as well as forgings but it seems to be the way it is. It saves mucho manufacturing dollars....meaning higher profits for the maker and to hell with the customer. That is the saving grace of the modern CNC milling centers, they turned the high cost around and now it is as cheap or cheaper to mill many parts as opposed to casting them. I read where CZ had returned to milling CZ 75/85 frames and slides again after acquiring CNC machinery.

Cast receivers don't blue well.....or at least they didn't used to. The early Rugers were almost purple and some Winchester 94's made in the 70's wouldn't reblue. This all had to do with the alloys employed, which they have evidently corrected by now.

Investment castings are quite strong, yet when raised on forged steel parts and knowing the inherent strenght a forging possesses, accepting a 'cast' receiver is difficult to do. But, I did and none the worse off because of it.

Hello All

Next time any of you are sitting in line with the hot section of the jet engine - WORRY - those blades that are sitting in a high-G field at a pretty high temperature are all investment castings.

Remember also that the billet from which the receiver was machined started life in a crucible of molten metal.

cheers edi

this is from brownell's web page for the CZ550 action:

"All the best features of the Model 70 and Mauser actions. Claw extractor gives controlled feeding plus, positive extraction for excellent reliability. Traditional, reliable, standing ejector. Machined breech is setup for .002" crush fit. Convenient scope mounting with integral dovetails on a double square bridge receiver. Bolt features quick, push button disassembly, plus an easy-to-see and feel cocking indicator. '98-style, third locking lug gives extra strength. Positive detent rocker safety; three positions on .30-06 action, two positions on Magnum actions. Trigger has smooth face and fully adjustable for take-up and pull weight. One-piece, machined steel, triggerguard has hinged floorplate, non-detachable magazine with synthetic follower.

SPECS: Forged steel. Action, in the white; polished finish. Blued floorplate. .30-06: Long action with .30-06 bolt face. M26x2sp3 thread. 5-round mag capacity. 8�" (22.2cm) long, 3 lb (1.4 k g) weight. Magnum: Magnum length with.375 H&H bolt face or .416 bolt face. M28x2sp3 thread. 4-round mag capacity. 9-3/16" (23.3cm) long, 3 lb. 1 oz. (1.4k g) weight. FFL "

rgrds,

steve