Getting ready to slug the barrel on my marlin 1895GG 45/70 and was wondering what others have found to be their bore measurements.
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Getting ready to slug the barrel on my marlin 1895GG 45/70 and was wondering what others have found to be their bore measurements.
Last edited by brstevns; 03-04-2012 at 11:18 PM.
My GBL slugged out to .459, I have read alot of people came out with .459.
My Guide Gun slugged at 457.
Key
"Hatred is the cowards answer for being intimidated"
My standard rifle slugged .457 measured with a dial caliper.
Greg B.
My ported 1895GS slugged .457"
-Matt
Group Buys Honcho'd: C326-175-FN, 434-210-RF, C434-210-RF, 30-165-SIL-MOD, 358156-PB, 413-170-Keith, C348-225-FN, 8mm SIL, 45-230-CM, 45-270-Ohaus/SWC, Edd's 28-170-FN
Slugged my 1895 at .457. I was a bit amazed it was that tight. I size to .460 and will continue to do so. It certainly shoots well for me.
I never slugged my GG but I shoot my Lee 405 HB sized at .459 and it shoots great.
A gun is like a parachute: If you need one and don't have one, you won't be needing one again.
Mine slugged .4575, my bullet is dropping .4585 . so will give it a try as is. Bullet is Lyman 462560
.459 w/ a dial caliper. A bit of constriction under the rear sight dovetail.
Endowment Life Member NRA, Life Member TSRA, Member WACA, NRA Whittington Center, BBHC
Smokeless powder is a passing fad! -Steve Garbe
I hate rude behavior in a man. I won't tolerate it. -Woodrow F. Call, Lonesome Dove
Some of my favorite recipes start out with a handful of depleted counterbalance devices.
At what FPS you guys shooting?
I soot anywhere from 1300 to 1800. I have pushed it harder but don't see much reason to.
Measuring with a dial caliper is +/-.001" so your .457 might be .456 or .458, and you cannot
tell. You really need a .0001" rated micrometer to do bore slugging that will have any
accuracy.
Bill
If it was easy, anybody could do it.
I think mine slugged either .458" or .459". I however size to .462" to help center the boolit better in the gigantic chamber mine has. A round loaded with a .462" boolit will still drop right to the rim with a thud if loaded through the port.
You are right, I did use a micrometer capable of going to .0000 That gave me the .4575 reading.Originally Posted by MtGun44
we are measuring the grooves not the lands right?
That is right (the Grooves)
Just cast 100 lee340 from a mold I got from midway boolits are 461+-1/2 the lee sizer is 460 advertized at 457 they were backorder for a month I wonder ifthey changed the size?
I think you are lucky if you are getting 461 or better from the mold and also have a .460 sizer from them.Just cast 100 lee340 from a mold I got from midway boolits are 461+-1/2 the lee sizer is 460 advertized at 457 they were backorder for a month I wonder if
The lee mould I have drops a .457 and my sizer does size at .457. Both a little small for my 45/70. Had to beagle the mould and use a 459 H&I die for sizing.
Just sized a couple today and they sized at .457 going to try to hone it out to .459?
.458" on mine.
Ebner
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