f6.5 cm resizing problem
- Thread starter BW64
- Start date
Maybe you have already tried this but one more check before you send it back is to place two thicknesses of scotch tape on the back of the go gauge. Trim tape round with scissors. They are approximate .002 thick your bolt should not close with the tape on the go gauge. If it does then you are set more than .002 headspace. Often setting the barrel nut will change the headspace and it takes more than a try or two to get it perfect.
At least in my experience and I have rebarreled a couple dozen or so Savages.
Good Luck,
Randy
[hanksQUOTE="MNbogboy, post: 37100203, member: 1276877"]Maybe you have already tried this but one more check before you send it back is to place two thicknesses of scotch tape on the back of the go gauge. Trim tape round with scissors. They are approximate .002 thick your bolt should not close with the tape on the go gauge. If it does then you are set more than .002 headspace. Often setting the barrel nut will change the headspace and it takes more than a try or two to get it perfect.
At least in my experience and I have rebarreled a couple dozen or so Savages.
Good Luck,
Randy[/QUOTE]
Thanks Randy. Yeah I did that numerous times when I installed the barrel. Worked perfectly.
BW
T
At least in my experience and I have rebarreled a couple dozen or so Savages.
Good Luck,
Randy[/QUOTE]
Thanks Randy. Yeah I did that numerous times when I installed the barrel. Worked perfectly.
BW
T
BoydAllen
Gold $$ Contributor
There are a few more details worth mentioning here. If you set your die to touch the shell holder at the top of the ram's travel, with no case being sized, and then insert a lubed fired case and raise the ram to the top again, sizing the case, you are likely to see that where there was no gap, one has appeared...that will give you some additional room for die adjustment. You need to bump relative to what a fired case that is tight in your chamber, minus primer, measures. One fired brass will generally work with the shoulder in the same location ( 0 bump) as it came out of the rifle after firing, because it takes a couple of neck sized firings for the shoulder to head dimension of fired brass to reach its maximum) If the die is correct for the chamber .001 of actual measured bump for the camber's maximum achievable fired case head to shoulder dimension should give you a good bolt close with no problems. An issue that can come up is that because of variations in brass hardness the same die setting can produce different shoulder to head dimensions, so it is a good idea to check all of your cases as you size them to see what the result has bee for that individual case, If you happen to use a relatively hard case to set your die others that are not as hard will have their shoulders bumped more than you intended, and if the case that you use is one of the softer ones, harder cases' shoulders may not be bumped at all. A friend of mine had this problem when working with a couple of magnums, a 7mm WSM and a .338 Lapua. He had a large shooting budget so I directed him to one of the better rotary annealers and we set it up to do just enough to uniform the bump without making his necks too soft.
Thanks Boyd. I'm familiar with that process & understand different brass will resize differently. my problem is case diameter near the base. It's coming out of the gun .004 more than SAMII specs. So even if I neck size it will not fit into a Wilson or RCBS seater die. Thanks for the input. I can't wait to see what McGowen has to say.
BW
BoydAllen
Gold $$ Contributor
Sorry about that I got carried away. You probably noticed that the chamber drawing included a +.002 tolerance, but even so your chamber is oversized at the back. They need to send you a new barrel. I would point out to them that on a replacement they should be able to get that done inside of a week given that you do not want a redo of your barrel. If you send them the barrel and one fired case they should be able to reach a conclusion just about instantly. Anything else is stalling.
Yep. Sent the barrel & 2 cases. When I told the guy on the phone it seemed like the chamber was a tad oversized he says "well that's your opinion". That's when I knew I would have a problem with them. I can assure you if they don't solve the problem they will be blasted on every social media & gun forum I can find!!
BW
BoydAllen
Gold $$ Contributor
If they don't make it good, why would anyone buy one of their barrels? If your measurement is correct, your tools accurate, then either they have an out of spec. reamer that they should have picked up on before they started using it, or their barreling process is not correct. Either way, it does not reflect on them well. I have seen some of the Criterion barrels that have done very well.
en, post: 37100260, member: 185107"]If they don't make it good, why would anyone buy one of their barrels? If your measurement is correct, your tools accurate, then either they have an out of spec. reamer that they should have picked up on before they started using it, or their barreling process is not correct. Either way, it does not reflect on them well. I have seen some of the Criterion barrels that have done very well.[/QUOTE]
Yep. Have a Criterion on my Rem 700 in .308. Great shooter.
BW
Yep. Have a Criterion on my Rem 700 in .308. Great shooter.
BW
Got my new barrel yesterday. Now to break in & find a load.GOOD NEWS!! Heard from McGowen. They are replacing the barrel due to the rear of the chamber being out of spec.
BW
2 bad barrels from McGowen last year. Sent the first one in, after inspection told me it was a bad batch of steel. Took them 13 weeks to get me a replacememt. Replacement was bad as well, admitted another bad one out of that bad batch. Refunded my money. Never again.
I'm not liking this reply!!
BW
Probably just a fluke, anyone can produce a bad barrel. Two in a row was frustrating. It was the 13 weeks to get one that did me in.
Double jitters now. What cal was this one in?
6.5 x 284
Well it's been a while but I have to reopen this thread. Having the same problem with 3 different brands of brass. Base measurement is too big to fit back in chamber. Plus it takes hella force to resize & I get a bright ring just above the rim. Had the barrel on & off a few times trying different head spacing. No luck!! About 700 rounds through it (*not hot loads)& I'm back to square one. Only thing I can think of is to have it set back. Should be lots of life left in the barrel.
BW
BW
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