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6 Posts
I have a .45 Colt Mountain Gun 625-6, well almost, the S&W service shop has it now.
Mine has a large cylinder gap, .450 cylinder throats and a huge amount of constriction in the barrel, though though frame. This all led to the predictable results of leading, blow by and poor acuracy.
I bought it nearly new "as is" at a gunshow for a decent price, after "bullet slip testing" the cylinder throats and slipping it a feeler gauge. So I really didn`t get any surprises. The bore was clean, but a .45 Colt, with a light barrel contour, just about guarantees fire lapping was in order.
I was really looking for a clean M-24, but couldn`t find one. Since I had recently bought a Ruger Bisley in .45 Colt (my jump on the .45 Colt band wagon), the Mountain Gun seemed a good idea at the time and I took it home.
I put up with the leading and poor acuracy for awhile and somewhat lost intrest in it. Then out of the blue, I e-mailed S&W. Even though I wasn`t the original owner they said send it on back, they paid all the shipping.
Now I`m awaiting the results of thier "inspection" and what they intend to do about the revolver. I`m not sure what to expect. I hardly ever buy new fire arms and have never delt with any firearms companies service department.
Concerning loads, I was shooting mostly 255 RN-FP at 900 fps. I have some heavier LBT`s, bought for the Bisley, but the way the Mountain Gun was leading it seemed a waste to shoot them.
There is a good article on John Linebaughs web site concerning loading the .45 Colt in S&W revolvers. John recommends staying around 25,000 psi. for "everyday" loads and a 32,000 psi max. Then goes on to say he has shot hundreds of 32,000 psi loads with no ill effects in his several M25-5`s.
J. Linebaughs loading data, has a 260 grain "Keith" bullet running 1426 fps at 28,000 psi and a 315 grain NEI bullet running 1283 at 29,400 psi in a 7" presure barrel.
I had shot 255 grain loads at 1200 fps in my Mountain Gun and they where plenty spunky!
When I get my Mountain Gun back I`m going to put some effort into working up some good loads for it. I`m intested in finding out if all the .45 Colt "hype' has any truth to it, come hunting season. I know very well how my M29 and Bisley .44 mags kill.
Teuf,
Mine has a large cylinder gap, .450 cylinder throats and a huge amount of constriction in the barrel, though though frame. This all led to the predictable results of leading, blow by and poor acuracy.
I bought it nearly new "as is" at a gunshow for a decent price, after "bullet slip testing" the cylinder throats and slipping it a feeler gauge. So I really didn`t get any surprises. The bore was clean, but a .45 Colt, with a light barrel contour, just about guarantees fire lapping was in order.
I was really looking for a clean M-24, but couldn`t find one. Since I had recently bought a Ruger Bisley in .45 Colt (my jump on the .45 Colt band wagon), the Mountain Gun seemed a good idea at the time and I took it home.
I put up with the leading and poor acuracy for awhile and somewhat lost intrest in it. Then out of the blue, I e-mailed S&W. Even though I wasn`t the original owner they said send it on back, they paid all the shipping.
Now I`m awaiting the results of thier "inspection" and what they intend to do about the revolver. I`m not sure what to expect. I hardly ever buy new fire arms and have never delt with any firearms companies service department.
Concerning loads, I was shooting mostly 255 RN-FP at 900 fps. I have some heavier LBT`s, bought for the Bisley, but the way the Mountain Gun was leading it seemed a waste to shoot them.
There is a good article on John Linebaughs web site concerning loading the .45 Colt in S&W revolvers. John recommends staying around 25,000 psi. for "everyday" loads and a 32,000 psi max. Then goes on to say he has shot hundreds of 32,000 psi loads with no ill effects in his several M25-5`s.
J. Linebaughs loading data, has a 260 grain "Keith" bullet running 1426 fps at 28,000 psi and a 315 grain NEI bullet running 1283 at 29,400 psi in a 7" presure barrel.
I had shot 255 grain loads at 1200 fps in my Mountain Gun and they where plenty spunky!
When I get my Mountain Gun back I`m going to put some effort into working up some good loads for it. I`m intested in finding out if all the .45 Colt "hype' has any truth to it, come hunting season. I know very well how my M29 and Bisley .44 mags kill.
Teuf,