@ 04:42 am (GMT) |
Gerry MoriartyFirst I'd like to say that I'm new to the site and have enjoyed reading everything in these forums. I have a Win.70 in 30-06 that was assembled in the 1990s. It has a sporter wt barrel. I usually load 180gr. bullets for it. Because there are those on this site that are keen on the Amax bullets I gave them a try today. I used 46.5grs of IMR 4064 and the 168gr Amax. At 100 yards they grouped about .75in. The thing that puzzled me was the impact of the group was 2 inches right of center. Why would this be? And as a general question for the group. Why is there more love for the Remington 700 over the Winchester 70? |
@ 06:50 am (GMT) |
Mike NeesonRe: Winchester model 70Hi Gerry, The different POI (point of impact) will be because the new cartridge combo is setting off a different harmonic in the rifle. If you start working up a load - half grain increments - I would expect your POI to slowly scribe an arch over the target. As you change the powder, so will the POI change. When you find two or three loads that have roughly the same POI and are showing good accuracy, you will have found an accuracy node for that cartridge in your rifle. (and don't worry, if I'm wrong I'm sure someone will set us both straight) Never forget the disclaimer!BTW I just checked my latest load workup targets, and my groups starting 1" left then progressed to center and then 1" left as I worked through the loads. As for the Remington 700 love? Well I think it's just that there are a lot of parts easily available and the system is easy to work on. I believe the Win 70 is an excellent system too but I don't have any experience with it. BTW in Nathan's latest book there is a photo of Steph shooting a Winchester Montana extreme - so don't feel too left out. :-) |
@ 06:51 am (GMT) |
Mike NeesonRe: Winchester model 70*edit* groups started 1" left, through center and then 1" right of center. |
@ 09:33 am (GMT) |
Mike DavisRe: Winchester model 70as Mike has said probably just different harmonics...I too have mid 90s mod 70 lightweight ...just spent time getting it back to just around the 1" mark..re bed etc etchow is the free float on your barrel????? reason I ask is that Ive handled 3 of these over the years and all 3 touched on left hand side of barrel channel before free floating...mine had printed different ammo into playing card sized group at 100.....havent tried that for years but guess it still would, some rifles do it others all over the show. |
@ 10:24 am (GMT) |
Warwick MarflittRe: Winchester model 70Welcome Gerry. I'm sure that the answers to your questions and more are all in the series of books Nathan has written over the past 5 years. You won't regret buying them! Yet a better idea! Christmas is coming so get your family to buy one book each for you. If you have enough family you'll be the happy owner of the full set. Lol. I sighted in a mates Model 70 SS in 30-06 a few weeks ago. I loved it's good manners. I have put first dibs on it if he decided to sell it. Enjoy the TBR site. |
@ 07:37 pm (GMT) |
Nathan FosterRe: Winchester model 70Thanks for helping Gerry guys. All good info.I have an M70 that I am extremely fond of Gerry and as Mike pointed out, Steph shoots a Montana which is in essence a left hand M70. |
@ 03:09 am (GMT) |
Dave GuthrieRe: Winchester model 70More than likely barrel harmonics are the gremlins changing the POI. I own a safe full of M70s, both pre and post 1964. While the 700 is a great rifle i always found the 70 to be more accurate out of the box. I have no experience with the new Browning made M70 as i quit buying anything later than the XTR rifles. There are some skeevy 70s out there, but if you stick with the pre 1964 or the XTR rifles theres never been a better hunting rifle made in my opinion. Time will no doubt tell if the new Utah rifles are worth their salt. |
@ 02:47 am (GMT) |
Warwick MarflittRe: Winchester model 70I was reading about the new XPR Winchester bolt action rifle last night. You would think that once you have tooled up a factory and perfected the design to make a really good product like the M70 with controlled feed? that you would reach a point where you can provide a fantastic tool for a long time that a working man will buy because it works like it should. They don't change knifes and forks because they work as they are!Sure you can change the colour of the handle but the base design and it's functions can stay the same. Right? |