Wanting a different caliber for a 1903A3 action.

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You may want to take a look at the 9.3x62 been around since 1905. Same bolt face as the 30-06. Standard bullet weight is 286 Grains. Not sure if you handload or not but Norma, Lapua, Prvi Partizan load factory ammo for it.
 
Why would 10 grs Bullseye with no bullet generate ANY pressure?
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Bullseye is very fast burning (which is why it tales so little of it in most applications, and why large charges of Bullseye are dangerous.)

In a semi-confined space like a .30-06 case, 10 grains produces so much gas, so fast, that it cannot simply bleed out the case mouth. It produces enough to expand a .30-06 case to fill a .35 Brown-Whelen chamber.

Try this: Prime some .30-06 cases and load them with increasing amounts of Bullseye. (Warning! NO bullet. Just use a quarter square of toilet paper to hold the Bullseye in the case.)

Chamber them in your .30-06, and notice when the report changes from a fizzle to a BANG! Wear hearing protection!
 
7x57 but stamp the barrel .275 rigby just because it sounds cool or .318 westly richards. then put it in a pre-war british style stock
 
You could get a chamber insert and shoot 32ACP...that would be different! Ha Ha. I'm going to say 338-06 FTW.
 
My "03 rebarreled to .25-06 is one of my favorite rifles. Pac=Nor barrels of Brookings, OR is currently running 8-10 week turnaround time and is a fine qquality barrel.

gary
 
db_tanker -- I own a 416 Taylor. Don't get me wrong, its a nice caliber, but I think something like a 338-06 or a 35 Whelen.

Sizing brass can be a PITA and with those two calibers you can pick up factory sized brass...you can get factory sized Taylor brass...but you don't want to pay those prices, trust me.


PLUS...338 and 358 dia bullets are a bit easier to find.
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I just don't understand this...How expensive is the empty sized brass? How many reloads are you going to get from them before they're too stretched out or cracked--as long as you don't overload? How many rounds are you going to be shooting in the course of the year?

So what if they're $5.00 a case in a 50 lot...so you spend a little now and get what 450 to 600 shots out of those 50 cases and they last you 40 years of hunting...What's your time worth having to form those cases from .458 brass? Which is a more expensive!

What would you expect of a .416 cartridge, same cost as a .222 Rem? Hell the bullet will weigh almost as much as the whole cartridge does...More powder, heavier bullet all add to the cost...

If we were talking shooting 250 rounds each and every weekend in competition like with a .408 CheyTac then that's a different matter but you've got a pure hunting cartridge there not a target load...

There are more .30 bullets then .33, there is more .33 bullets then .35 but there is about the same .35 to the .410
 
the 375/30-06 ackley & 400 whelen are a couple good big bores that would be right on a g&h style springfield sporter. pac-nor chambers both of them.
22 hornet would also be neat in a 1903.
i'm going to build one in the future. i have a sedgley 22 hornet magazine for a 1903 & a bolt thats been modified to fit the hornet casehead & uses an ar-15 extractor.
 
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