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Posted: 7/4/2015 5:34:26 PM EDT
[#1]
Certainly.
I would probably try to cast both chambers and measure the difference. Hand turning a reamer to take a few thousandsths out of the throat shouldn't be difficult. I'm sure one of the pro's will be along in a minute with better advice. 
http://www.4-dproducts.com/displayitem.php?rowid=357&tname=rental |
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Posted: 7/5/2015 11:52:26 AM EDT
[#2]
Barrel leade length is probbaly not the only difference.
You will likely have to size for the shorter chamber producing more brass wear in the longer chamber. Diameter can also be a problem. |
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Posted: 7/6/2015 9:52:47 PM EDT
[#3]
Quote HistoryQuoted:
Barrel leade length is probbaly not the only difference. You will likely have to size for the shorter chamber producing more brass wear in the longer chamber. Diameter can also be a problem. Enlighten me please... If it chambered to proper depth why would other measurements be out of spec? Different reamers can and do have throat dimension differences with everything else being the same. As long as headspace is set...and he uses a good quality throating reamer he should be fine. In my experience when it comes to 300 blackout its just the throat And if his barrel in is chrome lined or nitrided he can't do anything anyways. |
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Posted: 7/7/2015 12:57:36 PM EDT
[#4]
Quote HistoryQuoted:
Enlighten me please... If it chambered to proper depth why would other measurements be out of spec? Different reamers can and do have throat dimension differences with everything else being the same. As long as headspace is set...and he uses a good quality throating reamer he should be fine. In my experience when it comes to 300 blackout its just the throat And if his barrel in is chrome lined or nitrided he can't do anything anyways. Quote HistoryQuoted:
Quoted:
Barrel leade length is probbaly not the only difference. You will likely have to size for the shorter chamber producing more brass wear in the longer chamber. Diameter can also be a problem. Enlighten me please... If it chambered to proper depth why would other measurements be out of spec? Different reamers can and do have throat dimension differences with everything else being the same. As long as headspace is set...and he uses a good quality throating reamer he should be fine. In my experience when it comes to 300 blackout its just the throat And if his barrel in is chrome lined or nitrided he can't do anything anyways. There are tolerances on every dimension in a chamber including headspace length, diameter, etc. All you need is a SAAMI chamber drawing to see all the possible differences. Unless the have been precision cut with the same reamer with little reamer wear between chambers they are not going to match. |
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Posted: 7/7/2015 2:49:21 PM EDT
[#5]
Quote HistoryQuoted:
There are tolerances on every dimension in a chamber including headspace length, diameter, etc. All you need is a SAAMI chamber drawing to see all the possible differences. Unless the have been precision cut with the same reamer with little reamer wear between chambers they are not going to match. Quote HistoryQuoted:
Quoted:
Quoted:
Barrel leade length is probbaly not the only difference. You will likely have to size for the shorter chamber producing more brass wear in the longer chamber. Diameter can also be a problem. Enlighten me please... If it chambered to proper depth why would other measurements be out of spec? Different reamers can and do have throat dimension differences with everything else being the same. As long as headspace is set...and he uses a good quality throating reamer he should be fine. In my experience when it comes to 300 blackout its just the throat And if his barrel in is chrome lined or nitrided he can't do anything anyways. There are tolerances on every dimension in a chamber including headspace length, diameter, etc. All you need is a SAAMI chamber drawing to see all the possible differences. Unless the have been precision cut with the same reamer with little reamer wear between chambers they are not going to match. but for practical purposes if you are pushing a shoulder forward (and adjusting the threaded shank correspondingly) even if you use a reamer that is not the same reamer the barrel was originally cut with you generally will see little in the way of change from a practical side on most rifles... in other words you are splitting hairs.. |
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Posted: 7/7/2015 4:03:53 PM EDT
[#6]
Quote HistoryQuoted:
but for practical purposes if you are pushing a shoulder forward (and adjusting the threaded shank correspondingly) even if you use a reamer that is not the same reamer the barrel was originally cut with you generally will see little in the way of change from a practical side on most rifles... in other words you are splitting hairs.. Quote HistoryQuoted:
Quoted:
Quoted:
Quoted:
Barrel leade length is probbaly not the only difference. You will likely have to size for the shorter chamber producing more brass wear in the longer chamber. Diameter can also be a problem. Enlighten me please... If it chambered to proper depth why would other measurements be out of spec? Different reamers can and do have throat dimension differences with everything else being the same. As long as headspace is set...and he uses a good quality throating reamer he should be fine. In my experience when it comes to 300 blackout its just the throat And if his barrel in is chrome lined or nitrided he can't do anything anyways. There are tolerances on every dimension in a chamber including headspace length, diameter, etc. All you need is a SAAMI chamber drawing to see all the possible differences. Unless the have been precision cut with the same reamer with little reamer wear between chambers they are not going to match. but for practical purposes if you are pushing a shoulder forward (and adjusting the threaded shank correspondingly) even if you use a reamer that is not the same reamer the barrel was originally cut with you generally will see little in the way of change from a practical side on most rifles... in other words you are splitting hairs.. Try and chamber a case fired in one rifle in another and get back to us. |
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Posted: 7/7/2015 5:54:27 PM EDT
[#7]
Quote HistoryQuoted:
Try and chamber a case fired in one rifle in another and get back to us. Quote HistoryQuoted:
Quoted:
Quoted:
Quoted:
Quoted:
Barrel leade length is probbaly not the only difference. You will likely have to size for the shorter chamber producing more brass wear in the longer chamber. Diameter can also be a problem. Enlighten me please... If it chambered to proper depth why would other measurements be out of spec? Different reamers can and do have throat dimension differences with everything else being the same. As long as headspace is set...and he uses a good quality throating reamer he should be fine. In my experience when it comes to 300 blackout its just the throat And if his barrel in is chrome lined or nitrided he can't do anything anyways. There are tolerances on every dimension in a chamber including headspace length, diameter, etc. All you need is a SAAMI chamber drawing to see all the possible differences. Unless the have been precision cut with the same reamer with little reamer wear between chambers they are not going to match. but for practical purposes if you are pushing a shoulder forward (and adjusting the threaded shank correspondingly) even if you use a reamer that is not the same reamer the barrel was originally cut with you generally will see little in the way of change from a practical side on most rifles... in other words you are splitting hairs.. Try and chamber a case fired in one rifle in another and get back to us. of course it wont fit perfectly... and you might have to shove it in there to do it... ...my question is that for practical purposes what does he have to be worried about by lengthening his throat and firing the gun ...to me the answer is nothing |
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Posted: 7/12/2015 4:30:56 PM EDT
[#8]
Unless both rifles are mil tolerance blasters he is giving up one of the most important things ... accuracy.
"Only accurate rifles are interesting." Townsend Whelan If all you want is a MO Barn rifle no big deal. The extra sizing to make shells fit both rifles is very likely to give up a lot. |
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Posted: 7/12/2015 6:24:46 PM EDT
[#9]
Quote HistoryQuoted:
Unless both rifles are mil tolerance blasters he is giving up one of the most important things ... accuracy. "Only accurate rifles are interesting." Townsend Whelan If all you want is a MO Barn rifle no big deal. The extra sizing to make shells fit both rifles is very likely to give up a lot. I have pushed throats with no change in accuracy... Yes you can ruin a good chambering but again for most people the poi shift or group size does not change enough to matter.....and bench rest shooters or competition shooters would try it and if it didn't work would just rebarrel anyways. |
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Posted: 7/13/2015 9:59:55 PM EDT
[#10]
Ok maybe should have been more specific if I seat the bullet deep enough to not touch the lands only one driving band would be in the neck of the case. The rest would be past the neck into the shoulder. I have ordered some cerosafe to cast my chamber just waiting to get it. But it seems to me that this rifle has a very shallow throat.
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Posted: 7/13/2015 10:26:03 PM EDT
[#11]
ok tried to take a pic the one seated the shortest OAL is the one that will chamber in my H&R seems wayyyyy to short lol
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