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17 WSM ammo spec's
What would you do with these spec's as COMPARED to measured ammo spec's?
I don't shoot any RF except for the 22LR, (when I can get ammo), as I perfer to use the 17 cals for the safety end/aspect etc. So I decided to get the 17WSM rifle for some hay field ADC work. I have been researching this case, mainly at Rim Fire Central site and found that this case/ammo is very hit and miss for results. This post is dealing with JUST the ammo and chamber spec's, (as I have my own Ideas on building the rifle I want), and what I have found in measuring almost 1300+ rds of ammo and fired case spec's. I have posted the SAAMI spec's for this case, and will post the results found so far from the measurements of fired cases/ammo etc. The measured spec's are, for all brands being made, AMMO, The datum case lengths, SAAMI spec's = 1.010" min and 1.020" max .236" datum hole, 1000 + rds measured, ALL ammo would fit inside .995", .985" = min, .994" = max, Ammo For the Lead measurements, = Saami = 1.274" I had the following, 1.214" = min, 1.226" = max, 1 rd = 1.232" (longest one ever measured) Even the longest lead measurement would fit into the tapered throat measurement, with room to spare. I used a 17 cal RF bbl and throated it with the 1'30" throater/reamer, for checking of the spec's etc. http://www.saami.org/PubResources/CC...01-14-2013.pdf Comparing to the SAAMI spec's for the chamber and you can see what I am talking about. The VERY liberal spec's seem to be excessive IMHO, I know that with the RF case you can only play around with reamer/chamber spec's to get the best results. Take a good look and the throating spec's, (as compared to the ammo measurements) and it is no wonder the poor results being reported. What are your thoughts or Ideas? Tia, Don
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#2
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That is why they grind custom reamers. Have a reamer ground to your minimums and then chamber a short piece of barrel and fit check the ammo before you use it in your rifle. Larry
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