First off it wasn't my idea to name a round after myself, RCBS does that for you when you come up with one unless you name it something useful. The Nyeti or 505 ASS WHOMPER were already taken :grin:
OK, the 505 Burns is a direct descendant of a 505 Gibbs and the 500 Jeffery. I was shooting a 505 Gibbs for a short while and doing a work up on load data. I realised quite quickly that the big Gibbs case was over done for what we had available in powders today.
I wanted a 50 cal sporting rifle. The limitation was I wanted to use the biggest case I could easily get to run through a "normal" action. The 416 Rigby seemed the way to go. The most popular 50cal sporting bullets are 510 for the Jeffery and 500 Nitro. Not enough shoulder IMO to use them with a bolt gun and a blown out 416 case but that extra .05 is enough for the .505 cal bullets of the Gibbs in the same Rigby case. I first used the 450 Dakota case because it is the easiest to load. (a wild cat Dakota not based exactly on the Rigby, beng slightly smaller. No fire forming. Load them up on the RCBS/Burns die set and go shoot them :grin: They head space just fine and shoot incredible!
The original guns were built on the CZ550 in 416 Rigby. It is a reasonable conversion. As it happens though the new 505 Burns round fits easily, fully loaded with the Woodleigh 600 gr bullets in the magnum size, new Classic, Model 70s from Winchester. We had Ted Blackburn design and build us bottom metal to hold four plus one. Now that is a conversion!
But we (Mike Kizler and I) have also designed and built production stocks and triggers for the CZ that will be available very soon for the magnum action in all calibers.
Easy enough to do, 375 bolt throw and good guns and bottom metal available. That is the combo for a real winner.
The case is incredibly effecient for powder, stack, and burn rate. Bullets available are 525 softs and solids and 600 gr softs, all from Woodleigh. There are other 505 bullets available but these have a great track record.
The 525s will do 2350 from a 21" barrel
with 45K and the 600gr will do 2200fps from the same barrel with a bit less than 44K.
I have not chrono'ed the longer barrels yet.
But so far the thing beats the 500 Jeffries or certainly the 505 Gibbs, hands down in recoil and being effecient on the powder burn compared to velocity attained.
This was the second one delivered. Like always mine is coming :grin: Not sure why I am smiling though!
<font size=-1>[ This Message was edited by: Dane Burns on 2001-11-05 23:05 ]</font>
<font size=-1>[ This Message was edited by: Peter Loron on 2001-11-06 15:17 ]</font>