quote:

Originally posted by Duane Wiebe (CG&R):
Had an inquiry....Anyone make .287 bullets for this cartridge?


A thought...taking a procedure from engine builders, knurling would "blow out" an over the hill piston

Could this be done to a .284 bullet?

quote:

Originally posted by Duane Wiebe (CG&R):
OK...just got to the bottom of this! The rifle is actually a 7mm Rem Magnum. Owner just wanted the caliber designation to be something a "Little sexier"

However, I really appreciate the information...who knows when that might come in real handy

Don't know if 287 barrels are available (easily anyway)

Thanks very much Duane

quote:

Originally posted by Duane Wiebe (CG&R):
Had an inquiry....Anyone make .287 buillets for this cartridge?


A thought...taking a procedure fron engine builders, knurling would "blow out" an over the hill piston


Cauld this be done to a .284 bullet?

quote:

Originally posted by eagle27:

quote:

Originally posted by Duane Wiebe (CG&R):
Had an inquiry....Anyone make .287 buillets for this cartridge?


A thought...taking a procedure fron engine builders, knurling would "blow out" an over the hill piston


Cauld this be done to a .284 bullet?

Yes, Woodleigh makes .287" 160Gr and 175gr PP SN bullets for the 275 H&H cartridge. Or did make them up until the fire, who knows if Geoff will get around to making them again. It seems he is concentrating on establishing production of the best selling bullets first which of course is understandable. I doubt that the .287" 275 H&H bullets had a big customer base.

quote:

Originally posted by Duane Wiebe (CG&R):
As I see it,...IF a 284 barrel is in use and somehow, a stumbler coujld jam a proper 275 H&H round into the hamber and touch it off, that .287-288 buillet would most certainly raise pressure to.....?

Fire form...? Hard to ell just what a fired case would look like.

I suggested the barrel be lettered in some manner to show a warning/advisory.

Re the 275 Rigby....still don't know what or who to believe. Since the Rigby version is simply a 140 gr bullet, some believe the throat was shorter to make the acomodation...ohers say Rigby simply used a 7 mm Mauser reamer (long enough throat to acomadate 175 gr bullets )

Personally, I've never been able to make a finding either way, but never was asked to chamber wih the short throat reamer I offer

quote:

Originally posted by Timan:

quote:

Originally posted by Duane Wiebe (CG&R):
As I see it,...IF a 284 barrel is in use and somehow, a stumbler coujld jam a proper 275 H&H round into the hamber and touch it off, that .287-288 buillet would most certainly raise pressure to.....?

Fire form...? Hard to ell just what a fired case would look like.

I suggested the barrel be lettered in some manner to show a warning/advisory.

Re the 275 Rigby....still don't know what or who to believe. Since the Rigby version is simply a 140 gr bullet, some believe the throat was shorter to make the acomodation...ohers say Rigby simply used a 7 mm Mauser reamer (long enough throat to acomadate 175 gr bullets )

Personally, I've never been able to make a finding either way, but never was asked to chamber wih the short throat reamer I offer

It's unlikely a stumbler would be able to chamber a .287 .288 bullet into the smaller throat of a 7mag but if the larger bullet did chamber and is fired startup pressure would swage it down immediately and it would pass on thru. Yes the pressure would be a little greater, but as long as the load is a safe load for the original, the shooter likely wouldn't ever know the difference. If the bullet was not a lead core bullet, a solid of some sort, then yes pressure will be seen and perhaps experienced. I've been told by those who make bullets that lead swages at 2000 PSI. Wasn't it PO Ackley that experimented with shooting .358 diameter bullets thru .308 barrels to prove the bullet swages to size almost immediately, extrudes and just passes on thru the barrel, or was Zeglin that did that experiment.