Simpson 270 manual

Both schematics and a US Army Technical Bulletin with some adjustment info attached below the photos. Since I love photos, here are a few showing the end results, the last time I had an analog meter was back in the 80s, a Micronta I'm really impressed with this Simpson after a few adjustments.

I tried to remove some of the parallax with my camera angles. Who needs 7. The following users thanked this post: BravoV , xrunner , Edwin G. Pettis , GEOelectronics. Not every shot is perfectly aligned with the mirror but I can tell that it's extremely well calibrated! HammerTone Newbie Posts: 3 Country:. I have not kept an accurate count of the game bagged with the.

When first introduced, there was quite a bit of speculation on how much faster it is than the. Data published in various reloading manuals answer that question.

If data for the two cartridges in a particular manual were developed in barrels of different lengths, I compensated by adding 25 fps per inch for the shorter barrel.

Average maximum velocities for grain bullets were 3, fps for the. Averages for grain bullets were 3, fps and 3, fps respectively for a difference of fps. Averages for grain bullets were 2, fps and 3, fps respectively for a difference of fps. I still occasionally hunt with my two. Mine weighs 5. My first one was in. Depending on bullet weight, powders with burn rates ranging from H to Retumbo are viable candidates.

Designed in about , the 6. In I hunted caribou in Canada, and because two bulls could be taken legally, I took along two Remington rifles, one in 7mm Remington Magnum, the other in 6. Residual energy at yards was about the same as for the.

I was right. The Model I used to take a caribou had a inch barrel and was a preproduction rifle built specifically for that hunt. Soon thereafter, Remington added the 6. A few ARs have been available—and still are available—in 6.

Due to an extremely high expansion ratio, the little cartridge does not gain a lot of velocity as barrel length is increased beyond The 6. A friend of mine bought a Model Seven in 6. Neither is there a shortage of reloading components. Brass is available from Hornady, Nosler, and Starline, and expanding bullets designed specifically for use in the 6. Soon after Mike Lake of Nosler had completed the designs and specifications for a family of cartridges on the.

The 26 Nosler introduced in was followed by the 28 Nosler in , the 30 Nosler in , and the 33 Nosler in His other creations waiting impatiently in the wings are the 27 Nosler, the 35 Nosler, and the 36 Nosler. I was especially interested in the 27 Nosler, and while there are no immediate plans to offer unprimed cases, ammunition, or rifles chambered for it, my friends at Nosler kindly agreed to build a Model 48 Liberty in 27 Nosler for this report.

It weighed 8 pounds, Its inch Shilen barrel measured 1. A rifling twist rate proved to be quick enough to stabilize the rather long grain AccuBond LR, but even longer bullets are available. Should Nosler eventually move forward with production rifles chambered for this cartridge, a twist would be in order. The 27 Nosler case is easily formed by necking down 30 Nosler brass. I used an RCBS die set and first tried running a case through the full-length resizing die with its mouth in contact with the shellholder.

The bolt would close and lock up on a case, but the fit was a bit too snug. I then lowered the ram and turned in the die just enough to force the RCBS Rock Chucker press to cam slightly over center when the ram was fully raised. Cases sized in that manner allowed the bolt to close and lock up with only light resistance. It proved to be excellent brass. Date Unknown. From Brad. Simpson Series AFP Simpson Series 8 - VOM. The Original Simpson Simpson Series 2 - VOM.

Simpson Series 9 - VOM. Simpson Series 3 - VOM. Simpson Series 4 - VOM.