Recent content by R.G. Robinett

< https://www.brownells.com/gun-parts/rifle-parts/rifle-receivers-parts/sinclair-bolt-stops/ > This style of bolt-stop is worth consideration - easy to install and they work GREAT. RG

Try a Harrell's - inexpensive and effective. RG

Presuming adequate twist for the over-all LENGTH, it's unlikely that the bearing surface length, except for "tuning" (powder charge weight:velocity), will have an effect: for a .224 bullet, a OAL difference of .03125" (1/32nd") will equate to nearly a full inch of twist: shorter, slower; longer...

Fuj - the Border Barrels graph is showing us, that, at any MV at, or, above 1250 FPS, a 1:16" twist will produce Sg1.5 while, with MV of 3K FPS, a twist rate of roughly 1:16.6" will deliver Sg1.5, and @ 3.5K MV, a 1:16.75" the same . . . in real-world, no difference. This graphic displays, how...

WEIGHT (GRAINS) 100 WEIGHT (GRAMMES) 7 SECTIONAL DENSITY 0.177 BALLISTIC COEFFICIENT C1 0.322 TWIST RATE FOR STABILITY FACTOR OF 1,5 16.9 Fuj - I got this a little cobbled-up, but useful. The twist, weight, BC, etc., were calculated based upon your provided length, and a [tangent]...

Cool project, Fuj. The late George Myer made some great wildcats based upon shortening the .284 Win. George's .30Myer, designed to meet the old NBRSA and still IBS Hunter Class capacity minimum of, "thirty-thirty", or 45.0/45.5 Gr. H2O, is a GREAT design: T.K. Nolan won several NBRSA Hunter...

George got me all wound-up with the velocity thing, so, I did a little fiddling on the Tioga Bullet Design program - to see what the real-world BC, for a 100 Gr. 7mm/.284 HP FB bullet might be.:p Here's some practical bullet design data which, will prove very useful for someone wanting to test...

"If 7mm would work, everyone would be using them . . . " - a bench-rest mentality made up quote. :p The late Gary Long messed with the .284 bullets some, as I believe George Ulrich and two lesser know individuals have done: with suitable BR quality bullets, there is ZERO reason that a 7BR would...

Clever concept . . . maybe even some gimbaling to help with alignment. :cool: RG

A direct link to another legendary ICON :cool: - Guy was a great asset/emissary to bench-rest shooting! RG

Truly, we are diminished. RIP with Helen, Gary.

George - what were Dave Kranch's actions called? RG

Thank you, dwconder - Dave confirmed this also. The dies were delivered and look remarkably similar to all of my W.B. Niemi dies. It required a tap on the skull for me to recall that Bob Siminson was involved in a parachuting accident, which pretty well wrecked him - I had forgotten that. :(...

Steve, as I hope it was clear that, for me, Allen was a very good mentor - unusually capable of constructive criticism - a GREAT resource. As you are well aware, he was in on a LOT of the ground floor testing of the 6PPC - especially the pressure testing. I can relate to your experience -...

Hunter, resurrecting this thread - especially Wilbur's appropriately timed astute comments - is terrific! The pics bring the comments to life and bolster the axiom: "picture is worth a thousand words". Thank you!!:D It appears that the linked thread is still, "HOT" - I am tempted to go back and...